Thanks for confirming. I measured the u-joints with a China Bay electronic caliper about 3 times. Thought it may have been spitting out wrong numbers. I then took those two numbers and got the measurements confirmed on Summit as being the 7260 and 7290. I just didn't figure they used two different u-joints.

I am just now putting in a 318 with a cast 340 crank (it was the only crank I had available), ported Speedmaster heads, Speedmaster air gap, +.060 bore, 228 @.050 cam, Comp Cams Ultra Pro Magnum rockers. Pretty nice little build. The trans was a unit that was built for a hot 408 in a B-body and the buy decided to go big block with just a few thousand miles on it. It has some performance stuff done to it. A friend of mine built it and sold it to me for his customer. The torque converter will (hopefully) flash at 2400. For now it has 2.71 gears but the next upgrade is some 3.21 or 3.55's.