[Joshinator99]

Originally Posted by LT4 650

Thanks for the response but E85 is not really available (one station and it is far)...I do have access to 100 octane but it is $8.29 a gallon. Otherwise we have only crappy 91 octane here in AZ.

So to my original post if I want to start with pulley and headers...which would be the best route? UPPER or LOWER pulley???

Doing the lower means it is less likely to see belt slip vs doing a smaller upper pulley. Do a minimum 95mm throttle body if you’re going down this road (along with CAI, headers, and pulley). If you don't have E85, or even 93, I'd plan on a splash of Boostane with every fillup to get your octane number decent.