This 700 Header Pipe works for both Carburetor and EFI 700 Models. Simply Unplug the O2 Sensor !Most customers say "It Runs Better !"This Pipe comes with (1) Mid-Pipe Gasket and the (2) Head Pipe Gaskets !
This is for the Head Gasket only. 800 and 1000 share the same Head and Base gaskets, the Stoke is longer on the 1000 and the 1000 Cylinders are Taller.