the 3 port is a great engine for buggy, I ran one once in a truck and it left me asking for more(however you may be able to clutch it and pipe it to be good)that does'nt say a whole lot as my trigger finger is very LIGHT, that's why I prefer the plus4 with a 9901/41021......it's butter smooth with GOBS of USABLE power everywhere throughout the powerband........I am running a plus4 paired with a 9853/41005 in my truck this season..............good luck with your new Novarossi.

I think most will tell you either 21-4, p5x or 21-7 for Arena Truck.