The mancini one fixed a very pesky rear main seal leak for me & others have that exact same style. I'm not sure why it worked, but I'm sticking with it. I also used the silicone 2-piece seals, the good side seals, assembly lube, VERY thin smear of RTV on the mating surfaces & offset the seals. Check Hughes Engines, I believe they carry the same rear seal retainer. I used their directions for installation.
70 Roadrunner convt. street car
440+6, NOS, 4-spd, SS springs
'96 Mustang GT convt. street car
'04 4.6 SOHC, NOS, auto, lowered
"Officer, that button is for short on-ramps"
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