Yeah, I think at some point, you have to trust the parts you have invested in....a few TNT's should be able to allow you to build some trust. Your car seems very reliable and fast enough to be fun. My goal would be to fix what I need to on mine, which is go to a full cage, fix the wiring, and switch to a 315 radial so I can call it a small tire car and pick a class like BB NA or somthing.
My car has been streeted for years, and I think if I fix the wiring, all I have to worry about is the engine. I think a G3 is in my future after this G2....