Yeah dont do this hot pipe coating, primer goes on at 67 mils...cant imagine how thick the topcoat would go on. 67 mils is very thick for a coating, coverage this thick is applied at 19 square feet per gallon (Figure the paint you use on your walls goes down at 400 square feet per gallon). Check JET-HOT, just had my stinger for my shifter kart done in extreme silver and it is beautiful, and inexpensive only $125!