honestly i think the 80 would work fine for ya. if ya get one with a higher pump pressure you may have to get a fuel pressure regulator and a gauge and set it on about 7 or 8 pounds,because you dont need to put any more than 8 pounds of pressure on your carb's needle and seat. and the way they rate their pumps is at a free flow rate of (gallons per hour) gph.i have a 80 on my cleveland motor and its got a few goodies in it and it works fine, if you have any more questions let me know or post here...
