I've gone through the Solo RB more than once digesting what the rules are pertaining to the Dmod class. I'd like to have the minimum weight I need up high of course. From what I can tell in App. C there is nothing to say a single person width top hoop can't be used in the Sentra, if only one seat is fitted. Meaning a small hoop only above the driver. Correct there? Also, from what needs to happen with tying the front suspension in, would you think the front brace could run from the front of the top of the main hoop down to near where the strut tower used to be, even though it would be approx. 10" below the A pillar to roof intersection? The comment in the rules about sufficient entry and exit would be taken into account and since I'm a fair small fella I don't see that as a problem.