Just use a hone from super cheap.
some wd40
Hone the least amount you can to get it to come up reasonable.
Smaller one I think that is so I'll get one when I get up there
The car size one.
Its a big enough bore.
You need the stones to have a lot of contact area with the bore so that they do not drop into the transfer ports and get ripped off.
So more than 50% of the stones length needs to be in contact with the bore so that the stone does not tip and drop into the transfer port.
The only way to do that is to have stones that are more than twice the length of the ports.
The hone i use has stones near on the length of the bore. With the block mounted in the vice tipped a little bore down, Heaps of WD40 and a cordless drill on the hone. Slow speed, up and down taking care not to go in too far so that the hone bottoms on the crankcase or crankshaft.
When you are done clean the bore out with a rag, then wipe out with a rag and soapy water then dry it. Put it together straight away smear 2 stroke oil on the piston and rings etc. Pour a bit of straight two stroke oil into the crankcase on the bearings.
