Sport jet 90-replace engine???

[backwater dawg]

Now that I may have to do further work on my 1994 Merc Sport jet after the middle piston burned---my question is??? Is it possible to replace the existing 3 cyl 90 hp with a 4 cyl 120 hp without to much hassle---Thanks

 

[bdbunch]

Re: Sport jet 90-replace engine???

did you ever get any responces? what did you do? I have a freind with the same problem and wanted some advice.