I know z71rat has a lot of savage experience,.i would take his recommendation into serious consideration
Also, I had one of.....if not THE first ptg stealth bottom metals for a savage short action.....that was sent to manners and I got the very first manners stock using the new ptg stealth dbm when it came out.
When comparing the Ptg stealth to cdi.....the ptg wins hands down. It's WAY beefier and also sticks out beyond stock so you could ram it against a barricade, window etc...WITHOUT exerting force on the magazine.
I'm in a very honest, no B.S. state of mind right now so I'll say this......between dealing with ptg and manners......what a nightmare. Tom made it right in the end.......but I'm rocking an AI 2.0 folding chassis right now and have ZERO regrets.
With all that said......i would go one of two ways if I were in your shoes.....keep your factory stock and go the Snydermags route or just get a chassis and rock cheap magpul mags or pricier metal AI style mags......i would not mess around with PTG or CDI on a factory stock