Whipple twin screw supercharger for chevy 8.1L 496ci motor for possible trade

May consider possible trade for a 1930-56 chevy or ford truck or 30-57 chevy or some other old car or a 4x4 chevy/gmc truck crew cab 4 door truck preferred no s'10 pickups!or Toyota 4x4 truck or a jeep wrangler 4x4 must have title and be worth around the same value as I'm selling the supercharger for,if not some cash to go with your trade will work too.Whipple twin screw supercharger for a chevy 8.1L 496ci motor came off my 2004 chevy avalanche 2500 3/4 ton 4x4 worked when it was on it was on the vehicle when I got it so there are no instructions and I dont know a whole lot about it.just I think the 2 needle bearings were starting to get a tiny bit of wear was going to replace them before they get wore out.last time I checked it was around $100 for the bearings,seals,silicone gasket maker and supercharger oil.a complete rebuild kit if ever needed will run anywhere from $300-$600 you'll be getting the twin screw supercharger, water to air intercooler with water tank,electric water pump,cold air intake,new belt,alternator bracket and if I can find the alternator it will go with it as well since I upgraded to a bigger alt,I wasnt able to find the model number on it.selling for $4800 firm!