Joe Kriz wrote:
Ron's 17' hull has the deeper splashwell that started around 1986/1987

This deeper splashwell allowed for the Standard BIA mounting holes to be drilled.
The upper black and lower red holes are the standard BIA
http://www.whalercentral.com/articles...icle_id=82

People with older 16'/17' hulls would need to drill the Green holes in the drawing above. (possibly the yellow but measure twice)
If using the Green holes, your motor would be mounted 2 holes up and would be the lowest it could be mounted (using those holes) which is just fine for props and motors today.
You could also raise it one more hole if needed.

See this project album on drilling the Green holes:
http://www.whalercentral.com/userphot...lbum_id=64

There are quite a few others that have done the same thing above installing all the different brands of motors.
See crbenny's personal page and his E-Tec and the Green holes he drilled.
http://www.whalercentral.com/infusion...ser_id=291