I wouldnt get the truckzilla motor, everyone says its a pain to tune, and you have to be a real good! tuner to get it right, and even after that it doesnt hold a tune very well. I would just get something like a surefire .32 if you wanted a bigger motor for your savage!! that one has had good reviews! Or a o.s .30 or a collari .32 Or if you want something cheaper you could get a sh.28 pro, they are about $115 on ebay and have heaps of power and speed!! a sts .28 also has lots of power and speed its only around $110 but the sh.28 pro has a bit more power and speed.