I have some personal issues to resolve before I can build in good conscience, but I'm hoping it won't be too much longer.
My donor is still together so I haven't gotten a good look at the rear uprights, but they look problematic for the forward lower wishbone attachment, so a pic of yours would be very helpful.
I will have to split the interior room evenly or I will never here the end of it from my principal passenger-to-be.
I've been thinking of a welded sheet metal tunnel. The chassis will be a +221 for my height (6'6") and her can.
I'm with you on keeping the engine mods mild because I want it to last a good long time, and I will have to pass emissions tests. The focus will be on intake and exhaust. Your approach for the intake sounds very good. My understanding is that individual TBs eliminate the need for a plenum, but I don't know anything, either.
You are right that the RX7 Club is a treasure trove of info. I have done some reading there, but would want to ask about specific layouts.
The only internal mod I would do is the auxiliary port sleeves from Pineapple Racing. Pretty cheap, and very sensible. I'm hoping for about 200hp.