Which rear main seal do I need for my Pontiac?

Tin Indian Performance thanks you for watching!!
TIP-RM300
For 3” Main blocks
301, 326, 350, 389, 400 cid
Sealing surface approx. 3.188”
Purple in color
Buy here: www.tinindianp...
TIP-RM325
for 3.25” main blocks
421, 428, 455 cid
Sealing Surface approx. 3.436”
Black in color
Buy here: www.tinindianp...
We also sell rear seal kits that come with sealer:
www.tinindianp...
To see more videos about all things Pontiac and Tin Indian Performance click the LIKE and subscribe button in the video and click the bell to receive notifications of new content!
FIND MERCHANDISE HERE:
www.tinindianp...
TO FOLLOW AND SEE WHAT WE'RE UP TO:
/ tinindianperformance
email: [e-mail]
think . Pontiac . power