Im curious as to why more people dont use the IRS from a miata in the rear. The subframe would be extremely easy to adapt to a seven style chassis.
Now I do understand this means that a custom chassis is in order. At least the rear end. I am now at the parts aquiring phase of my build and need some yays/nays with this idea.
Price I found for complete miata rear suspension disk to disk is $225. There are three at the local wrecking yard right now!
Nissan 240sx drivetrain will be used because of the cheapness around here in so cal. (all the 240 guys go to sr20's)
Here is a pic for some views. From Kieth Tanners Site