Check the listing for details. ATLAS Transfer Case Rear Support Ring DIY Kit. Condition: New. Listed at 94.99 USD. Fast Fabrication Atlas Transfer Case Support Ring DIY kit Kit fits all transfer cases with a 3.900" output diameterAlso fits Dana 300 and NP231 with Advance Adapters HD Tailshaft ConversionThe DIY Kit Includes the following:1/2" thick precision laser cut support ring with laser etched cut guides2 - 3/16" thick mounting tabs; the bottoms were left flat intentionally so the user could fishmouth for any size tubing2- 3/4" OD x 1/2" ID x 1-1/2" long steel bolt sleeves1-3/4" OD x 1/4" wall DOM steel tube 2-1/2" longEnergy Suspension polyurethane bushings w/ sleeve1/2" Grade 8 hardware with lock nutsTo install: Weld the sleeves to the sides of the support ringUsing the laser etch cut guides, cut each side of the support ring and sleevesWeld the bottom of the support ring to the DOM bushing sleeve, you may modify the height if necessary to get the correct offset*THE INSTALLED PICTURE SHOWN IS THE PROTOTYPE ON MY OWN PERSONAL RIG THAT HAS BEEN INSTALLED FOR CLOSE TO A YEAR.