860 Big Bore

Here is what they offering:
Kit includes bored barrels and new sleeves, new pistons and rings, new piston pins and circlips and offset dowells. To the best of my knowledge its all there except gaskets and the crankcases would need boreing out and perhaps head relieving. Head gasket would need to be cut, probably from copper, or otherwise made.


       This kit is being sold for a mate, for who this has become surplus to requirements, never used. (He races XS650 and this would put him over his class capasity for racing). Head gasket would need to be cut, probably from copper, or otherwise made.  $800AUD Inc delivery

The Cylinders say 650cm3 So it has been bored out of a original set by the looks of it.


[I]
"crankcases would need boreing out and perhaps head relieving"[/I] Not sure what is additionally involved with that.
Then of course do you do the crank, rephase, 6th gear etc while its apart???
What about cooling, would additional be required?