I checked out the mac saws today and found a 35cc saw with the four bolts on the bottom and the crankcase upper as part of the cylinder, looks like a good candidate, Price? not so good but good enough that I may go get one tomorrow. It is for a Sea Fury 77" plans call for a super tiger 25cc, any opinions on the saw engine as a replacement?

This is the Sea Fury(it really looks like one hey!)