Weiand 6500-1 Features: Develop 400 To 450 Plus Horsepower Low Profile Design For Good Conscious Rodders Increases Torque For Heavy Cars And Towing Apps. Great Power Adder For Low Compression Crate Motors Various Snout Lengths For Different V-Belt Arngm. Full Time Power Every Time You Hit The Gas w/No Lag Height: 13.75 Width: 11.25 Length: 28.00 Weight: 66.00 lbs Fitment: 1996/GMC/G3500/Vandura Standard Cargo Van 3-Door/5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated::For Use w/Three V-Belt Accessory Drive Pulley Crankshafts~ Fits Most Short/Long Water Pump App.; Exc. Late Models w/Serpentine Acc. Dr~ Elongation Of Four Center Blt Holes May Be Req. To Install Cast-Iron Heads^^1996/GMC/G3500/Vandura Standard Cargo Van 3-Door/5.7L 350Cu. In. V8 CNG OHV Naturally Aspirated::For Use w/Three V-Belt Accessory Drive Pulley Cranksha...