my blaster is an 01. its got a paul turner exhaust system and has a brand new top end bored 20 over. i mainly ride in tighter trails and mud. i dont care too much about a high top speed but i dont want to sacrifice too much of it. im looking for something that'll provide more low end power. based on what ive read on here i think i might go with a 13:40 or 14:40. thanks in advance