More I read into it the more I'm inclined to think the 38 DGES is the carb to go for on our trucks. You'd have to be beating the crap out of it before the 38 gets close to reaching it's limit while the 32/36 might handle a few minutes of WOT before it gets strangled. It will handle running a modded engine without breaking too much of a sweat either. Take note of the above pump - AC Delco EP42S low pressure pump that delivers 42 gallons per hour. Same specs as the ebay budget pump as I have recommended (Carbole 42S).