last bore on cylinder

well i bought my bike used, and when it finally crapped out, aparently when the guy tore it apart, i didnt have a top ring on the piston at all...so they took the motor out cuz thats what i wanted to do so they could clean the mud and gunk out of the bottom of the motor, they did all that and went and got a stage 1 piston and it dropped straight through the cylinder so they went back and got a stage 2 piston and that one went straight through as well...so they had to order a piston from somewheres...so the guy who had it before me didnt tell me it was bored at all yet so instead of thinking about getting new cylinder and piston and rings and go back to stock stuff i ended up getting a new timing, new oil pump, new oil coolers(both), new giant size piston and rings, and got the cylinder bored...all in all now i have a brand new motor for the most part cept that i cant bore it up anymore at all...didnt think about getting just a new stock piston and rings with a brand new cylinder until after he was done putting motor back into the frame with all the new stuff in it