Building up a bike for my 12yo neph.

This is going to be a bunch of parts that I've upgraded from. All I need is a frame and odds & ends.

Looking for an inexpensive frame: Tapered, British, Disk, QR.

Size right now is between a medium and small. That's changing rapidly so let's go with medium.

I know there are 26" bikes that will take a 27.5, but I don't know them by name, myself. If you've got one that will work let me know.