34x15x3 intercooler. Cut down, in/out modified, originally from a Detroit Diesel S60 powered German Setra bus! Bumper brackets were cut off frame and moved forward about half inch...which moves the bumper forward the same amount. Not very noticeable in my opinion, and the truck isn't mint... It's a 2002 Silverado 4x4 2500 non HD. The plumbing is run underneath, electric fans installed from a later model 1500. Factory condensor and trans cooler.