Dear Kaama ; and actually all readers of this thread;
I am not an expert; just an interested man in performance offshore.
I read all monthly magazines ,spend 6-7 hours on computer everyday for almost 4 years .
American engines are easy to maintain and built .Even if you use used-gaskets,used lifters etc ,they work,if you broke some of the spark plugs they still work.they loose hp but they never stop.
as I see there is only one serious problem exists in powerboating, and this is drive-problem for sure.
on every forum ,on every magazine this is an endless story.there is always a man like me who believed -bought and had lots of troubles with alternative drives.
Would you like to spend 10-12K for an experience ; instead of listening lots of people used that stuff and not satisfied?
So why waist time and money with alternative units,the solution according to my idea is ssm5 or 6 series.
rebuilt ssm 5 is at the same price with aftermarket drives and it is race proven for years.
no 6 is the exact solution but expensive.
My personal idea is to buy the right part for the right job....