Please Help!!!!!!!!

So are you running the stock 19lb. injectors?

"...swapped MAF with a buddies cal'd for 30#'s, got .68 volts between C&D and 12.5 between A&B on MAF."

So the MAF you are running right now is calibrated for 30lb. injectors? Unless you are running 30lb. injectors to go along with that MAF, you will run into some problems.

Also, 35lbs. of fuel pressure might be a little lean. The stock Ford setting is 38-42psi. So you might want to bump it up a little. But I'm not sure if that would be your problem. The only other thing I can think of is your timing. Some motors love lots of timing and run great. Is this a stock motor? If so, 17 degrees of timing may be a little too much. But if it's not pinging, then I guess you are ok.

Check that fuel filter too, like -Bad89stang- said.