I am also a fan of 4stroke... its the Extra 300SP from GP... think I will be getting myself the 82a SAITO with a 3bladed 13x6 and 2 bladed 14x6 prop and experiment with those... will get a different plane and run a 2stroke in there for speed... I am swapping my FA65 for a Rossi 66 2stroker with claimed 3.5HP...