sounds like a good combo. i put a 110 in my 1641 with kads, and stock heads. ran pretty good, so i don't think it would be a problem. i would go with a 1 1/2 merged exhaust, the 1 5/8 ones are usually good for 2L's or bigger. i do have my 1641 for sale which has a dms crank, 110 cam, new stock heads, kads, along with other goodies. e-mail me if interested.