I have a conversion kit out of a '68 f-250 and I'm trying to figure out what its worth. I never used it as I redid some wiring when I got the truck and unhooked it but the PO said it was used when last park 3-5 years ago. I have the tank which took up the front half of a shortbox,all the lines that need replaced just cause I think it would be better to have new lines, the vaporizer, the regulator which is a century, the carb which is a motorcraft modified to burn propane has been rebuilt other than it needs a power valve, the deal that acts as an air cleaner, and the switches. This kit does let you run on gas or propane. My question is what is this set-up worth as a new one runs around 2500 dollars.