I would like to mount my Scott Casler 45hp 1/2 VW to my Legal Eagle. Standard mount LE with conicle bushings. I need the following information please: What type, How long, and what size. It appears my top bolts thread into the case. Do we thread the bolts into the case for mounting? Or drill them through the case and use bolts with castleated nuts and cotter pins? Any comments would be appreceated.