I know this has been discussed before but not in much detail about the marine 4.3 merc carb that is a quadrajet. It is 450 cfm and they sell reman ones on ebay for under 300. So it seems a pretty logical choice for the 225. The Holley 390 cfm is pretty pricey about another 100 higher and I am tired of kitting and adjusting this carter that is just evidently too big. Want to order it slap it on and make it purr...... just not quite ready for fuel injection coin.... although would be nice. Just initial thoughts but 4.3 vs 225 should be fairly close and the off road benefits of quadrajet would be nice.