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the kit includes the pistons and liners for the cylinders, and a base gasket and head gasket, the wrist pins and circlips, and maybe a couple of other small gaskets or something.
Your cylinders/barrels must be bored out and the liners from the kit are press-fit into your barrels. The going rate around here for the machine work is $200-300 USD. It is only a top-end rebuild, in that you do not have to mess with the bottom end. No headwork is required, but since you have the head off of the motor and the parts at a machinist it makes good sense to have the intake/exhaust runners cleaned up a bit. The compression ratio is 10.5-1, but you could mill the barrels down a bit to raise it if you wish. I would think 11-1 would be safe as well. Stronger clutch springs are required, but the stock plates are ok with the stronger motor. I have stock plates and stronger springs and the clutch holds just fine and the lever action is not much firmer than stock.
I had larger valves fitted, and also the intake manifolds port-matched to the newly ported/polished head, so I had a lot of stuff done at once. Your cams would be compatible with this mod.
The 1100 kit is just an overbore (like the 904) but it requires bored/split cases, along with a billet barrel, and pistons, and liners....
the 989 and 1200 kits require all of the above PLUS a stroked crank $$$
BTW, what kind of a difference did you notice with the cams?
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