hello ppl i have a 1990 larson sanza 170 with a 4.3 v6 in it and i have a quicksilver power2 prop on it its like haveing a 2 speed trans on my boat i just had to ask about tham what u guys think of tham all the boat places in my town have to seen one till i got one lol i live in a town called cadillac mi the boat will do about 50 or 55 on the water with 2 ppl in it and 45 to 50 with 7 ppl in it and pulling a tuber thx for your info in this