Finally got around to jacking up the 92 E150 with 351W and removing the secondary catalytic converter and restrictive stock muffler, replaced the muffler with as walker mega-flow and ran 2.5" pipe from the back of the primary cat converter. Runs FANTASTIC now and was also able to discover a misfire that i could not hear before, just ordered MSD (Rynite) distributor cap and rotor kit along with MSD Street Fire plug wires, that should take care of the misfire. Later on down comes the Tweecer EEC IV programmer and making some adjustments to the fuel and timing, cheap horsepower..