93 2500 propane converstion

i have a 93 2500 4by4 350 5 speed manual milage was horible i put in new delco plugs new wires cap and roter o2 censor and still only gets 12 and thats driving it nice no on the floor from stop light to stop light thats on the highway with cruise on at 65 so im thinking about switching to propane so i can maybe aford to drive it the only thing i saw on the net was injecting propane into deisels does anybody have any info on this or links on parts thanks in advance

I've seen several web sites related to propane conversions. I don't have a link, but I spoke with my local propane supplier at one time and they were able to give me some contacts. In some states you have to get a special registration sticker to be able to use propane. I know a lot of the rock crawler guys use propane, you may want to look at it up starting there. From what I've heard, your fuel mileage actually goes down with propane, but it's cheaper.