i have a aluminum bellhousing that's painted blue with a ton of grease and mud on it. i haven't owned anything newer than 72 so it should be older than that. i really can't see any numbers cast into it.
after i clean it up. what the fastest way to ID it if i can't find any numbers on it?

I have never seen a chrysler bell that didn't have a casting number. It will be on the face of the bell where the trans bolts up. You can look at pics of all the mopar bells here:
www.brewersperformance.com

THANKS for the link.
after cleaning off all of the gunk off it i found the numbers.
it's a 2892482. cast in 1/70.
fits 10 1/2" 69-71 Abody 70-71 Ebody small block bell housing.