Hi again guys, was posting about a year ago about an Allison leaky gas tank, with Roy’s advice the fiberglass would not hold up to the ethanol which was the problem.  In the meantime I came across this amazing gas tank sealer product that has stood up for the past year, It’s now great with a working gas guage on the dash and obviously more room under the hood. If  any Allison owners ( I realize there aren’t many) are interested in reviving their gas tank post back and i will give you the particulars, Gordie