Hi All
For many years I have owned a NSR250 MC18 R5K. Some years back I had an issue with it and started to strip it down for a rebuild unfortunately all that turned out at fault was on of the cables to the front cyclinder. Upon inspection of the engine and bores I noticed a crack between the ports and sadly my rebuild had stopped there due to money and time. However a few years on I wish to get it back on the road. However I am unsure on the route to take.

Rebuild to Standard and get the bores replated
or second option would be to buy one of the big bore kits.

Can you guys offer any advice thank you.