James did suggest the pump could be flowing too much, but the MSD box change will tell if its fuel or spark related. The car never really ran what I thought it should run. Maybe I have a weak ignition problem but running VP113 it wouldn't show up. Now switching to alcohol with alot more fuel volume a weak ignition might not keep up. The engine doesn't bang or pop just really sluggish coming up on the converter. The best E.T. with a carburetor was 8.89 @149. Should be running 8.45 to 8.50 @ 155.