I raced my buddies 04 Griz with my Vinson. He has 27" tires, I have 26".
Starting in second gear, I get the jump on him, and can rev it out pretty high before I have to shift, but he can catch up and pull away from me every time...that extra 160cc's makes the difference

 

If you are going to have to choose between the vinson and the foreman,buy the vinson it is a all around better machine.I have a 2006 vinson 500 auto and love it.Just add a air filter,clutch kit,ans a jet kit and there you go,oh and a nice pipe helps alot to.

 

If you have to choose between the vinson or the foreman,buy the vinson it is a better atv.I have a 2006 vinson 500 auto and love it.I used to have a 450 foreman and to be honest,the vinson will eat it for lunch.And the new body style looks good.Just add a jet kit,air filter,pipe,and a clutch kit and you are ready to tear up some trails.

 

Reverse Rev still current as above for a 2004 model?

"All of the wiring involved is over the left rear wheel.

Cut the blue/red wire to the CDI module. Tape the end to the CDI module. Connect the other blue/red end to the striped end of a diode. Connect the non-striped end of the diode to the white/red wire.

I used a 1N4001 diode for a total cost of $0.30. you can get one at radio shack."