Unfortunaltely, the 4 cylinder hasn't died yet. To be honest though, I noticed no power decrease from the 31 x 10.50's to these tires.
As for the other motor, I just swapped a Performer RPM intake on. It had the regular Performer intake and a friend swapped for free. I am placing my Summit order this week for the headers, carb, fuel pump, etc. Trying to save money while in college is impossible so that is what the hold up is for now. Next purchase will be the transmission.