Ok guys this is what i have...its a 2004 Sno pro 440 and i raced it for 2 seasons and know i want to trail convert it. The thing is i dont know if i want to just trail convert my 440 motor or go with a bigger one. If i covert my 440 will it be a dog in the trails?? What would u guys do??? Is it really that hard to put a bigger motor in it? What kind of price would i be looking at if i went with a used F7 motor?? Come on guysssss ya gotta help me out on this one.!!!!!!!