SS flat back CF action.

So will a PTG bolt head from midway fit a long action bolt ?
The ad says 10 or 110 for the same bolt head.
There is nothing on the SSS website I can find with conversion parts ?

Mine is a flat back, but seems to have a modern bolt or at least the rear BAF bolt is allen, IE I have a lift kit in it.

How do I set up the magazine ?? Or is there even one that will work ?
Totally lost on that part.

I know I will need a 223 bolt baffle.

What else ?

Thanks