Another rear main seal question

[70SwingerGuy]

So Im told that the billet rear main seal retainer kit from Mancini is the cats patoot when changing the rms, but it appears that they only make it for big blocks, am I missing something on their site, or does someone else make a similar product?
Thanks FABO

 

[dogbreath]

sbm does not use a seal retainer it just goes in the rear main cap

 

[70SwingerGuy]

sbm does not use a seal retainer it just goes in the rear main cap

Thank you for that