hey guys, I posted up a couple earlier threads floating around the idea of an eaton supercharger on a flathead. couple weeks ago I scored a decent M112 off a jag for $50 that I couldn't pass up. then at fitchburg fate told me I wasn't going to be making my own intake when within 15 minutes I found a sharp 2x2 intake that had been milled flat exactly like I would need. $150 later it was mine, and I sold a few things while I was there so i'm into this intake for $75. so, I'm looking for input from guys who have blown flathead experience. I have the basically stock 239 out of my old roadster that I'm going to test this on. block is cracked and welded with some tiny leaks in the exhaust ports (going to try stop leak) but it's in great running shape with a 77b cam. I have some 8ba heads to put on it instead of the edelbrocks. eventually I plan to build a 3 5/16 X 4 1/4 motor with some added work to really shake things up. anyone have an idea or source for a pulley ratio calculator? the M112 is 112 cubic inches. I want to run 1 or 2 v belts. low boost max of 5-7 psi. what should I look at for ignition?? I know there are electronic boost retards but not sure if I'm running enough PSI to worry about it. good write ups on home made pop off valves?? just general advice on things to do or avoid?? any special jetting to consider on a 97 with a blower?? I checked out the blower and it just needs it's coating stripped off the rotors and new rear needle bearings. like $5 worth of parts then reassemble. soon I will be posting up pictures of how I plan to mount carbs. hoping to fit three, but if I only get 2 that will be plenty for the 239. just a quick mock up to see if things would fit. hadn't even washed the grime off yet lol.