So. I need a stronger rear end. I already have a th350 that will do what I want.now it's time for the rear end. I'm definitely not going to spend the big bucks for a rear when there's more affordable options. So wjats stopping me from going and snagging a 8.5 10 bolt out of the scrap yard and just lining up the angles welding on my 7.5 mounts to it and slapping that bad boy in? Or is there a big length difference or of sorts?