OK, THANKS guys !
My trans guy is the only one who likes & recommends the FitzAll.
So, if I try it and it won't work, maybe I can sell it to him. If not, at least I'll still have my original, which I can mod.
AND, I'll know, 1st hand, whether or not the FitzAll will work in a Pontiac powered '68 Bird.
OR, even better, maybe I can sell the car before race season & let somebody else fix the leak.
Anybody need a cheap '68 455 bracket Bird ?
Anyhow, I'll post the outcome, when it happens. Thanks again for the replies !