Pontiac guy gone Mopar.

Hello all, my second post here. I've been screwing with Pontiacs since 1983, my current ride is a 65 Grand Prix with a 467 stroker, T56 six speed and 4.10 spool. But Ive always admired the 60s -early 70s Mopars. Recently my cousin died and I bought his 67 Barracuda with a slant six and 904 trans, just to keep the car in the family. Part of the deal was also the 2006 5.7 Hemi and 727 he was going to put in it, and I'm now trying to see that swap through. I've read you can put a 727 together with a 3rd gen hemi, but the 5.7 crank has a 1.33" pilot hole, and there's no way a 727 convertor will fit in there (1.55 pilot, I believe). What am I missing here? Will no factory stock convertor work? Aftermarket only? Any suggestions? Pic of 727 input to 5.7 crank, and the engine as it currently sits. Long way to go.

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