Hi,KC Have found out what size this thing is.Took it to local prop shop the man there checked it out says its a 14 X 25P he called it some nickname that begane with a (B) can't remember what it was, But said he hadn't seen one like it in a long time.This thing has a high degree of (RAKE)and (CUP) in the blades witch also effects the pitch.It has so much (RAKE) 30 degres or more, that if I set it on the table with aft end or "prop tip" on the table. The hub will not touch, it has a 5/16 gap between the table and hub.The (CUP)or concave in the blades is the same way, if I lay a strieght edge across the pitch line and the rake line, I have a 5/16 gap.Do you still think I should get a 4 blade 27pitch to see if I get the hole shot im looking for.Went to mercury web site they said to get a (TEMPEST PLUS 27p)What are your thoughts. Thanks Joe