Dana, with the Cobra brakes, what was the best wheel and tire combo you came up with?? I would like to find a set of cheap rims for the back, I thought someone said diamond rims?? Heard of them??? Also 26 or 28 inch tire, I'm running a 3:90.. I would love to trap 130.... I was thinking Street ET's....
I have heard of Diamond and know some people are running them, but I was also told that they wouldn't be strong enough. I don't know anything for sure about them, nothing first hand anyway. I would guess that if you were to run them, you would just have to watch them very closely for cracking around the bolt holes.
With the Cobra brakes I used Weld Pro XP's. 8.5 X 16 with 10.50 X 16 E.T. (26 inch) Streets. They went up in smoke launching at anything over 3000 RPM's. Maybe a wider (11.50)E.T .Street if they are available would be worth a try for you?
The 28 inch tire will drop you back down to a 3.55 gear, which isn't too bad, but you will loose the advantage of the 3.90's.
Maybe someone else can jump in with their experiences with the 28 inch E.T. Street?
Dan