Originally Posted by banks twinram

i have been doing some measurements and brainstorming about this for quite a while. it looks to me like i would need about 4" of spacing on the rear of my truck to be able to fit dually rims on the back. i do not want to buy a whole dually rear end and swap it out because there is nothing wrong with mine and they are very hard to come by and that would cost money... i have a good buddy that works at a machine shop that can build spacers for me for free. or i have been thinking about the factory spacers for the front hubs that bolt to the brake disk and then you bolt the tire to that. do you think i could fit one of these on the rear of the truck maybe with some machining to the middle of the spacer to fit over the rear hub? or would that make the spacer too weak to be any good? how could i make a spacer that would be strong enough to hold up to a gooseneck without problems? i can buy 2" spacers all day long from ebay but i dont think that would be quite enough room if i bought 2 sets and bolted spacer to spacer then to tire that would be 4" and be enough room, but they are 179 for a pair and that is a lot of money not knowing for sure if it would work or not. is there a web site that sells pre made spacers with good pictures that i can see what they look like before i buy them?