So with all of the 944/951 go-fast parts you are stuck with developing everything yourself? The struts, shocks, bushings, torsion bars, ARB's etc. are not common? Compared with my Volvo 240 you probably have 1000% more aftermarket parts to build an ITB car with. It's definitely not a bimmer, but not without some aftermarket love.
Not sold on the aero, but without complete info it's a moot point. Many would argue that a MacPherson strut and semi-trailing arm are never "excellent." The Porsche engineer's gave you the 924, that in your estimation is a good basis for an ITB car.
Yeah, unfortunately while most of the stuff looks the same... it's not. The '24 has basically the early 944 chassis... some of it's the same, and that's great, but there are odd differences... rear swaybar's the same, but the front's not. All the really good shock packages are available for the late 944/951, but don't fit our cars. The biggest obstacle though was the engine - no racing knowledge still around for such a limited prep level, so we did pretty much have to figure that out ourselves.
Can't dispute the 240 aftermarket, no personal knowledge there, just seen a buncha stuff in iPD catalogs, but that doesn't necessarily translate to racing.
Re: the suspension - no, the struts aren't great, we just have to go with the Colin Chapman rule - any suspension can be made to work perfectly well once you stop it from moving!
The rear suspension is excellent, though. Sure, it's a PITA to work on, not designed for racing, but it gives incredible grip and ability to put power down in the corners, way better than the solid-axle cars we mostly race with. Then again, those also have that crappy Fox-body or whatever front Rustang suspension, so they're double-dammed - just can't get through the corners to save their lives.
I'm still surprised the wedges aren't any better with the aero... ah well... I'm never going back there anyway...
PS - didn't choose it for the aero. I chose it for the worst possible reason - I already had and knew them. Then we got it moved out of ITA and things stopped sucking so bad.