any 3/4 exhaust will give u same results , the only diff will be the sound - size of cans will have a lot to do with it
Kelly at kms is one of the best can am guys he has 2 turbo mavericks one with 200hp hes here in phx az
turnkey and air raid have intakes or make ur own
qsc/stm clutch is the most popular , or if u have a few hundred more stm/stm rage 6 is best rage 8 if u need lil more grip 175-200hp !