I have an '06 1800SR3 with the 4.3. Nice engine, but has limits. I put on hydrofoil and 19" four blade prop. Helps with the trim and hole shot. Otherwise, wonderful boat.
2006 Maxum 1800 SR3
2002 Stingray 180LX (sold)
1996 Bayliner Capri (sold)
1959 Cruisers, Inc. Seafarer (sold)