[PxTx]

I feel if you want to do the job, than you can. Just have to have the right tools and a positive attitude. There is enough technical help on the net. Do you have any of the shims which were removed with the gears you took out?

I don't think your overheating issue is due to the gears. I've posted numberous times that I run 4.88 gears without issue. It is actually more of a street car than a race car. I get 12 mpg on average wiht a 327 and 2 Holley 600's, but have run at 5k R's on the highway for almost an hour straight and no issue.