Need everyone's oppinion

You ain't going to hurt an 8 3/4 even if you go to a big block (unless you bottle feed it), I know I've tried. Remember that mother put these same units behind factory BB's in heavy B bodies for quite a few years before switching to the Dana and I'm sure that was because they were selling a ton of 1 ton trucks at the same time and getting a deal on the Dana's (well it's possible). Anyway check out the pumpkin that SBBARRACUDA is selling, it's the perfect unit a 742 with the clutch type sure grip and good price or watch for complete drum to drum assemblies posted here. By the way I've never liked the 489 cuss of the BS crush sleeve even though there is a kit out there using the spacer and shims like the 742 and stay away from the cone type sure grip. Have fun spending money I know it makes me happy.:-D

Terry