How much would it cost? and where to buy a blower to put on my stock 385 hp mercrusier mag? Would there be alot of work to do this??

If you want to do it right it's alot of work

10k to do it all right with new parts. If the engine has more than 200hrs or so, it should be gone through first. You will need external hyd steering if you don't have it also.

thanks, that helps with my decision. Will be passing on that then and move on to a newer sunsation 28ft instead.

The sunsations look great . Down here in Fl I have my boat at dollar offshore and they sell sunsations I haven't herd anything bad. Sorry the engine is to pricy but new boat prices are crazy to . There's alot of fast cheep boats out there now take your time.

You can do it for less........the first time. As stated the blower will be around $5K but you have other stuff to upgrade. I agree with the 200 hour point too, might as well re-fresh the bottom end at that point. The new power should put you over 65-70 so hydraulic steering is a must if not already there. All this can put you well over $10K if you need to do all of it.