hey Greg? I think you know more than you are letting on...usseless...come on now! Dumping the fuel from what I understand can be acheived with a holly blue pump with a pressure regulator activated with something as simple as a converted mechinal fuel pump with a smaller spring hooked with a vacume line to activate the regulator, so the system does not run lean. You definetly know what you are talking about....tell me what make O2 sensor to use...you are right need a sensor with more voltage gain and reduction to monitor..here is a guy that turboed a 173 ci flathed http://cancermn.net/TS/TURBO.html his trial and tribulations real grassroots hotrodding. I already have a manifold and plumbing lets talk fuel and carbs...the timing is irrelevent with the boost your recomend 5 or so...I think you are right with continous duty...after talking with you I will utlize the ocean H2O to cool the fuel and air, will use a boat heat exchanger, cool it with ocean H2O. I would ideally like to put the carb befor the turbo, I just dont know where to dump the wastegate, seeing how it will be full of fuel, turbo lag is not an issue here.....any ideas, I just don't want to develope a leak in the carb and dump fuel on my exhaust manifold, although on 5 lbs of boost I do not think this will be an issue.....keep talking Greg