[GMC-V6]

Don't the 351 have a chain timing? If so then the 379 was a 351 with the 3.86 stroke crank put into it... Just like the 432 is the 401 with the 3.86 crank.. So given that, I would guess the crank gear can be swapped to the crank sprocket??? Maybe one would have to source the 3.86 stroke crank from/for the 379 V6 to make it work out?

Mike