Best mod is 800cc kit! With stock pipe etc you don't even need any fuel box. All bogs and issues are gone right away. Just bolt on top end there, add weight to primary and drive hard. After some time when you want more power, theres possibility to double the increase with pipe and other goodies
Everyone has good advice but on old sleds the $ is big part of the desission .
Bearcat has it right buy a used big bore for it and run the stock pipe and
No controler . That was what Kelsey was doing for awhile, lots of happy guys. The only other thing is buy a good can( sno stuff is junk) and put a A/F gauge on it with a fuel controler .
M2C
