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so if I were to go with an aluminum prop would this be the prop (below)? Tom this is the only choice for a 15" pitch. does anyone have experience?

13 1/2" 15(pitch) 3 (blade) Aluminum pressed in 6E5-45947-00-00

looks like I could also potentiall use these (see below).

13 5/8 14 (pitch) 3 (blade) Aluminum pressed in 6E5-45958-00-00

13 5/8 13 (pitch) 3 (blade) Aluminum pressed in 6E5-45949-00-00