To the best of my knowledge they will interchange no problem as long as you swap out the entire unit including gimbal. all the alpha drives had the same transom cutout and bolt patern even the bravos have the same cutout just 2 more bolts. I would be tempted to keep the gen2 drive in the boat and just go to a higher pitched prop, the only real dif. between the V6 and V8 drives is the gear ratio not strength. an example, if you were runnung a 21 pitch try a 25 pitch.