If you use the crank again check the converter/crank register for clearance. I've seen the thrust wiped out on a 4.15 stroke Hemi that they used a 6 bolt crank in with a stock Hemi converter. When the customer installed it the converter wouldn't touch the flex plate but he could still get the bolts started. A little brute force and she fit...

Fortunately it didn't hurt the crank, just the bearing.

We were told a stock Hemi crank register is bigger than an RB because a stock Hemi converter snout is bigger. Don't know if it's true or not but the new converter didn't interfere with the register and the old one did.

Kevin