Oh you most definatly are equal or lesser power loss than a 4x4.With no transfer,front shaft,front axel, you most likely are alot less.But I was trying to answer the question of why the 4x4 guys dont run a 3 spd.When you combine all that stuff together is when you will feel it.
For those guys disbeleiving I have hooked against 2wd blower trucks and they can be pretty bad a$$.I think you stand a good chance of being competitive.The big thing in my eyes is you are doing it---most people do not have the balls to even try something new.Dale does your rear have a banter style/needled center section?