nope, bone stock and in great shape. like i said i have never lost a race against him and my sled is heavier. i do have to say that his suspension is much nicer though. dyno'd at the crank.
my sled is a bastard child and i think somehow this twisted pile of assorted parts actually works out in my favor.
the chassis is a 1994 mach 1 670 with the original secondary clutching and gearing(changed spring position and clickers a little). the guy i bought the sled from was retarded and bored it .020 over and put stock pistons in it, had to punch it .060 over to get them round after that, that puts the displacement a touch over 600. had to mill the heads a bit. 96 worn out studs. mine has 44mm carbs, i'm pretty sure the z's had them stock not 40's(only the formy's and stx's had 40's. 7800 is the max rpm.
1999 Arctic Cat ZL 440
1994 SkiDoo Mach 1 583
1995 Honda CR 125R
1982 Camaro w/ 355