[Blazerowner]

I have an older Holley kit. I’ve started wiring it but I bought a new house and it’s been on the back burner. Im also having a shop built so it may be a few months before I can get back to it. The Holley kit I bought has a dominator ECU which to me was a big selling point at the time. Of course the new terminator kit is much cheaper. I think I paid 3 grand for the kit I have. I do know I’m impressed with Holley”s quality. All top notch and fairly easy to understand. The 4l60 will move your engine forward a bit. I have a ton of room with 4l80. I think yours will be fine if not perfect. I would avoid moving the tcase as this creates more work to your drive-lines, and making new holes for tcase mount and transmission crossmember. Even the tcase shifter will have to be reworked.