I was going to do an HX40-HT60 set... the one guy I know with that combo is around 600, maybe alittle more on a VP truck. The other is using a HX35 instead and is over 400, probably closer to 5. The Jammer's will fuel them well, but you should still be able to clean them up easily, you would have room for more fuel. Also depends what wheels the 60 has, from what I understand there are a couple combos.