Re: Suzuki 9.9 to a 15 ?
Can't speak specifically to the Suzuki but generally speaking these conversions are to costly and involved to be pratical. It is usually better to go ahead and get a 15 If it is a DT9C you can't do it it is a smaller block than a 15.The DT9.9 and DT15 are the same displacement.You may be able to tell the differences by checking part numbers for the block,intake,reeds,Exhaust
parts etc.If it is a choked down 15 it might be easier to do but you are talking a 66% increase in power.