I should've mentioned that couch mounts do not work with these hulls lol. Aligning these things is hell with those wacky mounting plates. That driveshaft extention actually looks just fine in since you have to drill and tap for the motor mounts anyways, i don't see why you don't just slide the motor back some more. Did you see my build? I only used like one of those mounting plates then tapped into the glassed in backing plates. Oh did I mention alignment with these hulls are wack ace as shards