Thanks for everyone's concern . First , the tank has several good sized holes and several weak spots that would rust threw in short order so patching it is out . As to installing / spraying in a liner the tank has water baffles every 18" or so to stop the water from sloshing so those options are out . The baffles will also be a pain to deal with when I modify the tank for riders . I will take pictures of the water to rider tank conversion as I ponder it out , then post it here. Second , the front mounted pump will not be removed so it will still be capable of pumping, only the tank to pump line / reel hose delivery line will be caped off so if I come up with the funds for a new tank , I can drop on the tank and install and hook up the water lines I've put away .
I have been approached by several people wanting to rent my services when the truck is done , for kids "Fireman's" Birthday party's where the guest of honor rides in the cab ( and can ring the bell and his/her friends ride in the back "tank" . My VFW post wants to do the same for parades. Several other groups are also interested . Can't keep one's plans secret in a small town . Not sure I'll go that rout , sounds to much like work to me .
I'll keep everyone posted and as always if you have a idea , question or comment feel free to send it along . I Value everyone's input .
ED