Zack, I do not remember but I think a 465 retainer will work. Make sure your 420 does without a doubt have a sealing surface on the input instead of threads. If you think it leaks now put a rubber seal on a threaded shaft and watch it pour! If it is the threaded shaft then just go to a tranny shop that works on trucks and get the packing you need.
Colorado Trail Patrol
Stay on the Trail!
I'm the God-fearing, gun-toting, American flag-waving, conservative you were warned about!
Originally Posted by Jacket
Welcome. Lots of "northsiders" here in the club. We're known to have some of the strongest, coolest and most awesome club members.
Originally Posted by Red_Chili
Cruisers are superior