That is the one you want, it's the non hemi model. There are a lot of places that sell hop up parts for them. Camshaft and flywheel are different between
hemi and non hemi ,but are advertised as such so it's easy to get the right
one. Two places that sell EVERYTHING you need are Go Power Sports and
OldMiniBikes warehouse. I have built 4 predator non hemis in the past two years and have made 15 to 20 purchases from each of those places and have always been treated fairly.