I guess the theme of this post is.....if you're working on your GTM and run across a problem, I probably have a solution already designed. I have a ton of stuff already drawn up in CAD to "fix" things that I don't have listed on my website. Some examples:
On the Gen I cars, we never use the FFR-provided hatch latch....because it's almost impossible to make it work. I have a mounting plate designed to accept the donor vette hatch latch along with the striker plate (adjustable) that mounts to the hatch. Yes, the striker itself you would have to fabricate yourself from 1/4" round stock, but at least most of the work is already done for you.
Does your B-pillar on your door stick way out past the body? Yeah, we run into that all the time. We end up making a small pie cut at the base of the B-pillar (we don't cut the B-pillar completely off!) so that the B-pillar can be "bent" in toward the body where it's supposed to be, and then we cut a couple aluminum reinforcement plates that we bond to the door to span the pie cut to hold the B-pillar at the angle we want and put the strength back into the pillar.
Are you missing one of the FFR aluminum close out panels or belly pans and can't reach FFR? Yeah, we've done that too....so I have a bunch of those panels already drawn up in CAD so we can cut them right here instead of waiting for FFR to ship us one.
Door strikers. We never use the FFR provided parts because they just don't work out most of the time. They're too short to reach the latch or the threads aren't long enough to reach thru the body and striker plate or they just look bad. We make our own from scratch with a nice aluminum mounting plate made to custom needed length to reach the latch
Brackets to secure the ends of the dash pods to the chassis so they aren't flopping around.
Alum panel to span between the waterfall and dash (needs covered with suede/upholstery)
Door popper solenoid mounting brackets
Reinforcement plates to reinforce the front hatch opening corners (so the main body does not crack from the hatch corners over to the quarter-window openings)
Hatch cable release bracket for Gen II GTM with Kooks exhaust to route the cable down between the mufflers instead of over the top of the muffler.
About a dozen different versions of ISIS (sorry, Infinitybox) Powercell and Mastercell mounting brackets with additional room on them to mount relays, other control boxes, etc.
Tillett seat mounting brackets (all set up for adjustable seat tracks/sliders)
GMPP LS3 engine harness fuse box mounting bracket
Aluminum overhead console (additional room for switches, traction control, radar detector stuff, dome lights)
Ram-lift Pro pump mounting bracket
Throttle pedal "adapter" for cable operated throttle body (made for car with FiTech intake/ECU/harness installed)
etc, etc, etc.
If you're building your GTM and run across something that seems like there should be a better solution, or something you've seen that we made for one of the cars we built here, but don't see is on the website and are interested to see if it's available....shoot me an email. Either I'll have something available that might help....or not...but doesn't hurt to check to see if maybe I can save you some time and prevent you from having to "reinvent the wheel"....