There is a used 1918 Stanley 23" boiler on eBay for sale at [contact.ebay.com] A word of caution here is: why was the boiler taken out of the car? Usually it was because the boiler had been scortched and the tubes were swagged so many times that now the the tubes won't hold tight any more. It is easier and more cost effective to buy a new boiler than it is to retube an old boiler. Unless you have a guarantee about a boiler being usable, a used boiler is good for only a static display like for a coffee table base with a glass top over it. Tough to vacuum under it though because it is hard to move.