I have a 99 Sportsman 500 that carried over some parts from the 98 model including the transmission.I have the electronic speedo and the transmission has the spot to connect the cable but it's not used where the 99 up models incorperated a block off in the mold of the case.What year transmissions will interchange without mods on the 99 year? I think the 2000 model will work but the 2001 looks to have a additional shift lever rod with a pivot near the brake rotor