My first question would be... why?
But, aside from that, my first comment would be to measure the space you have and then the amount of space that two motors would take up. IF you have enough room then I would weigh the engine or try to look up what each engine weighed and add them together for the total.
Compare that to a single 200HP motors weight.
If I recall correctly those were V4 motors... pretty big, and they were heavy also. Electric shift using two solonoids in the lower unit to shift from forward to reverse.
__________________
1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer
1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer
1996 V21 w/1993 200HP Mercury on a Shoreline Trailer
All towed by a 5.7L Hemi Durango.
If God didn't have a purpose for us we wouldn't be here, so
Live simply, Love generously, Care deeply, Speak kindly.
(Leave the rest to God) 
Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless.
|