81 250R carb swaps????

[mnsstuff]

what other bikes will the carb swap with on my 81R and which will give the best performance without buying somthing aftermarket?

[dufrain]

The 83-84 carb boot and carb will fit easily and its a couple mm bigger.The 86 carb will shoehorn in the 83-84 boot to but you sometimes have to heat up the rubber to get the bigger carb in there