Engine coupler replacement in twin 350 28zx Donzi

[powerguy]

Looking to buy 28zx and both drive couplers are worn. Has anyone here repalced the couplers in this model boat? If so, can it be done by moving the motors back toward the rear seat and not completely removing the engines? Any advice of cost to do this?
Thanks

[Liberator21]

Once you do the job, I would have the alignment checked before you start using it.