control box question

[cooper17]

I am new to this forum. I have a 1987 40 HP Yamaha. (40ELH)

Right now it has a sidemount control box. (703 I think) I am thinking about buying a used centre console Boston Whaler but I need a top mounted control box. (704 I think....)

Any suggestions and or pictures that could help would be appreciated.

[boats.net]

Would need 704-48205-B1-00 control box but would need to change throttle arm in box to pull to open throttle. Would also need 704-82570-08-00 ignition switch and 10 pin main harness the 20ft is 688-8258A-60-00