I’ve seen that fastegg guy locally, he gets gapped by stock 5.0s. I have a buddy who has a stock ctsv and he won’t run him. Lol
I don’t see a stage 1 gti having anything for a CTS V, I tried one being Stage2 and got double bussed by it. Now that I’m protuned, I can probably get a car on a first gen coyote.