Adrian_Thompson wrote: BTW, please don’t take the above as criticism, I love the car and have said so before in other threads. It’s just me desperately trying to persuade myself it’s possible to build a quick E30 without the time or cost of an M/S50/52
Go ahead and do the S52. There is nothing really more complicated by comparison between the two. Wiring is a quick adapter away. Motor mounts are simple.....about the only "fabrication" to be done is getting the exhaust up to the headers.
S52 + 3.5 MAF + Headers + tune + OBD- I intake manifold will get you ~235whp..........insane fun in an E30..........if you're willing to spring for cams/injectors you can push that up to the 255-260whp.