18 VS 23 spline

Seriously? 500hp? You're running a 360 stroker? No. What rear end are you running? I'm sure the 23 is PLENTY strong enough with an 8 3/4 rear end, other parts will break first. Spend that extra money on BRAKES, because you're gonna have to slow that beast down... Don't get drilled and slotted rotors, google stress risers.

http://www.forabodiesonly.com/mopar/showthread.php?t=124884

I hope I didn't come across as a dick, I'm just sick as a dog and grumpy today.