I was going through my spare parts, and found two Mopar Performance rear main seal kits for a 440 big block.
P4271961, They have the regular black rubber lip seals, and red rubber side seals. Just like this kit on Mancini
Mancini rear main seal kit (LINK)
[Linked Image]

Do these hollow red rubber side seals work well?

1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1