I'm excited about the transmission mount. The rubber on my stock mount is starting to peel away from the metal. But the Revshift insert looks new. Any chance it'll be height adjustable (e.g. screw drive) or provide better lateral support? Also, what's the chance that you could mold some 80A exhaust hangars? The OEM rubber ones are very soft and can crack and decay.
As far as toe rods go, I think you'd have to come in with a product that's lighter, stiffer, cheaper, easier to adjust, or some combination thereof (versus BMR or Creative Steel). On the front end of the car, there's more room for improvement--we don't have light/stiff tie rods, and we have one of the world's heaviest spindles. That spindle could be swapped out (see thread) for the V2 spindles, if only we had compatible sway bars or end links. If there's anything you can do about any of that, I think you'll have some excited customers.
I'm also looking for someone to do some plastic/carbon fiber molding of underbody panels. Do you know anyone who might be capable and interested in that?