the only other motor to consider if you were willing to change engine families would be the 400- as it is of comparable size. I've had both but still prefer the 390- call me sentimental. LOL If you already had a 400 in the truck you be better off to stay with it, it can make decent power and it has a longer (4" versus 3.78") stroke than the 390- but was a dog for compression and induction from the factory.. JMHO