I'm hoping someone might be able to point me in the right direction. I have a custom designed and built 21' mahogany run about thats using an omc 3.0/cobra I/O. The main problem is the cg is to far back and would like to use a jack shaft to move the engine forward rather than use trim tabs or fuel tank/battery relocation. I have read that mercruiser has this set up availible but have not been able to find any engineering data or contacts. Any help is greatly appritiated.<br />Thank you