[THEFERMANATOR]

17 pitch stainless 3 blade in around a 13 1/2" diameter would be my reccomendation. If you step up to a 15" prop, drop down to a 15 pitch. That's a lower rpm looper, iirc wot should be 5000-5500 on it(or 5600 since it's a 175hp). I think a 19 pitch is going to be too much pitch for it. Another prop I would seriously look at would be the michigan wheel stainless 4 blade prop in a 16 pitch. They hook up very well with very low prop slippage, plane quickly, and bite hard at cruise to increase cruising speeds. Solas also makes some good cheap props. Stainless or aluminum is a choice of your budget and how you boat. If you boat where there is a good chance of you hitting something, I reccomend aluminum. It's cheaper to carry a spare prop than it is to bend a prop shaft. If you boat in open waters and can afford, I would strongly reccomend stainless.