I just picked up a 1989 Glastron 16' with an 88hp Johnson(J88MSLCCC) but have a 1995 115hp Evinrude(E115TLEOR) sitting on a hull I purchased but never used. This will be my first boat to ever put in the water, as you can see its the second I've owned, and really need help. Should I pull off the 88 Johnson and install the 115 Evinrude? Thank you all in advance for your help.