Track car design I've been working on

Over the last year decided to teach myself fusion 360 to help with my interest in designing my own track car.  Car is designed around a ZF8hp paired with some sort of chevy ls style engine, likely a iron block LQ# which is why ive stretched the front to bring that weight towards the center and rearward of the front contact patch. This is mostly due to ease of finding these, cost, durability and banging through 8 gears is just so sweet. I tried to add elements of tunability to the car through principals learned in books by seward and smith, various adjustments like the spacers that allow wishbone attachment to vertically move +- 1 inch to adjust roll/instantaneous centers for example. The frame isnt currently validated with FEA  like the aero hasnt been validated with CFD, (aero like the infinity wing is currently for funsies and like everything is subject to change.) I like the idea of an 8-1 collecter with equal length stepped headers (steps not pictured) for the sound even tho theyre likely a little less efficient that a really good tri y or something. The bellcranks are currently at a 2:1 at 30 degree pushrods, currently 3 inches wheel travel. Heave spring for eventual aero development. Played around with a few body design ideas but i need to keep drawing and coming up with a body shape/ style i like

Track 78"

Wheelbase 100"

estimated weight, not sure. probably similar to something like an ultima so like 1000-1200 kg? 

The reason I want to build a car vs just buying a track ready car which would be easier simpler and far cheaper, is the challenge and enjoyment of making something from scratch. I have welding and machining/ fabricating pre reqs from previous jobs and people in my life that can assist me luckily. Slowly working away, hoping to start in 2/3 years (currently building a house) so ive got time to continue refining/ redesigning etc. The car isnt for any class or designed to meet any stats. It'll be a garage queen for the winter and hopefully do 8-12 track days/ time attacks a year if i can get out. 

Looking for some constructive criticism 

This is insanely awesome.

Please, please, PLEASE follow through.

If I could just make one suggestion (I know ... everyone's a critic, right?)

As long as you're starting from a clean-sheet, might as well design the cage to fit around modern full-containment seats. From the images, it doesn't look like there's enough clearance around the head/shoulders to fit one.

My gut feeling is that the exhaust is going to cook a lot of things, and clearance is going to be fun as the exhaust expands with heat.  I've seen stainless exhausts grow an inch in length over the length of a car, you're going to have to account for that.

On that note, while you're adapting to a weird transmission anyway, why not just adapt to an Audi transaxle and go mid engined.  You have to route coolant to the front but that generates less heat than routing exhaust to the rear.

I like short wheelbase vehicles but 100" seems short for the amount of speed this may be able to generate, dependent on what your intended tracks are.

In reply to LanEvo :

Thank you very much

The cockpit is probably bigger than it seems. The seat itself is 34 inches tall and 4.5 inches off the floor, its an random model i got of grab cad a long time ago as a place holder that i scaled up to be the same size as a seat like this The seats for the winners - P 1300 GT (recaro-automotive.com) I believe this is what you mean

Ive hummed and hawed multiple times over the height as well as the angles on how the roll cage sides affect the shoulder width, the windshield here is modeled off dimensions from a corvette forum of a c7, so im not entirely sure what windshield ill be using and theres room to move it around. Id like a proper glass windshield as it would be nice to potentially hold the door open for street legality over some sort of lexan with coatings or whatever is used... Im pretty large, 6'4 and 230 and i dont want to be miserable in this thing. I think as is it should be pretty roomy as far as race cars go. The model here is scaled here to 6'4