bootleger

If your in the USA find Rockler.com on the web look up part#33209 it is for an 8-32 threaded insert zinc plated steel. The price is $2.89 american enough for two bolt on necks(8 pieces) on the back of the plastic bag it gives you the pilot hole size required for the insert. 19/16" for soft wood, 5/16" for hard wood (maple).

If you mean the headstock shaped from a strat style to telly style yes. If you want to convert or fit a strat neck to a tele body then you either square (shape) the heal of the strat neck to fit the tele neck pockets are cut square (for reference the term square was used). Look at a strat body neck pocket then a tele you'll see the difference.