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you have a 4x2? the 7.5 uses the same 3rd member as the ifs front 4x4 trucks use... so the yare durable, to a point, but an 8" is much better... if you dont have an 8" then you would need to do a complete axle swap over to it.....i dont think the 7.5" came in any truck that wasnt a 4x2 in the rear... my truck is a 4x2, and has an 8" rear [g662]
I believe they're 6.5", not 7.5" man. My brother and I have both had a gts and I'm pretty sure they're smaller, but you're right on the lsd . Makes for wicked fast donuts.
If I don't switch out the 7.5" in the rear of my 81 then I'll go that route, if not I'll set up an 8" with an 86.5 or newer supra lsd from pnp. I got the last one for $35, and next half price day should score 2 more.
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