Just bought a 1997 38 Duffy with 650 Mack and am new to this sight and DE boats. Still own a 29 Blackfin (my second one) and the new Duffy is head and shoulders above it. I have been suprised at how few 38 Duffys are out there and also hard to find any posts on the 650 Mack. I am told the 38 didn't sell well because the 42' was introduced at about the same time and only cost about 1,000.00 more so it was a logical upgrade to most buyers. The Mack seems to perform extremely well, giving me an honest 18-20 knot cruise with 6 people on board and a fair amount of gear and 3/4 full of fuel (300 gallons or so). It also appears to be miserly on fuel as well, although I haven't calculated exactly. Does anyone have any comments on the scarcity of this hull and motor and any suggestions on things I should look for or be wary of? Look forward to any comments or suggestions any of you may have. I am soooo happy I have converted from deep V to DE!