What should I do for a rear end?

[Doug]

I just bought an 87 2-wd with a 350 and a T-10 manual, what I believe I have for a rear end is a 7.5 from the year. I know it is a 3.73 from the Gu6 option code. What are the diferences between the 7.5 and the 7 5/8, are they just in the axle splines? Should I find a 7 5/8 and bolt it in or can I put those internals in my 7.5? I want to run a posi and maby rear disks so which case are they common in? I plan on enventually making about 450 hp, but I always like to error on the side of saftery. Or keeping with that idea should I just install one of the 9 inch rears that my dad has collected over the years?



Thank You very much

[doghouse]

The gm rear won\'t last like the 9 inch will

Why put money into a rear that won\'t help the value of your truck.



This is how i did it.



bone yard 9 inch drum to drum $150



Take to shop to be narrowed, axels redrilled for gm pattern $250



Detroit locker of ebay $150



4.10 gears out of Uncle Henrys $40



New drums and parts for rear brakes $150



Bullet proof rear end \"PRICELESS\"



PLUS THE TRUCK IS WORTH WAY MORE IF YOU EVER SELL IT.



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