Universal M-25XBP
My '82 C30 was repowered in 2000 with a Universal M-25XPB. It has plenty of power and runs smoothly. It now has about 400 hours on it and I've had no problems. One of the wooden access covers on top of the engine had to be modified with a recess area to accommodate it. It was installed by Hansen Marine near Boston, but I'm sure there are dealers in your area.Good luck.Dave