Finally got it all in. I have an 86 Jimmy that had the original 305/700R4/208 and 10bolts front & rear w/308 gears. I was running 33x12.5x15 on stock truck rallys. (Which are for sale if any one is interested!!) I am now running a 355/th350/np203 and an 8lug 10bolt up front and a 14bolt rear with 3.73 gears. And 33x12.5x16.5 on 16.5x9.75 Steel wagon wheels. Man that was a lot of work now to wheel her!