I have a 2002 Glastron SX195 with the Mercruiser 4.3V6 w/ Volvo Penta SX drive. Here is the deal, I know of a 5.7 Mercruiser that has been completely torn down and rebuilt that is a COMPLETE motor for $1500. The guy says that it should be around 285hp +/-. Here is my question, How "direct" is...