Should I make the swap to G3?

And just for the record, my '70 Dart driveline is a 392/6.4L Hemi backed pup with a 545 RFE and a 8 3/4 banjo. Tubular front end, subframe connectors, CalTracs, etc. I don't need to apologize for the car.

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You don’t need to apologize for anything. BAD *** CAR!