How much of a hassle would it be to swap motors with a Crate motor? I think the ZZ4 is the motor I was thinking of swapping... but unsure? Anyway, what would have to be done? Because I figured instead of doing a LT1 rebuild, might as well upgrade the motor and the Crate motor is rated better/stronger then the LS1, so I figured... why not? Any help would be appreciated... thanks