not savage & not Remage but Winage prefit barrel

So i have done a few savage builds now with Criterion barrels, and i love them. My buddy has asked me to build him a rifle just like mine but with a Winchester model 70 action in 300wsm. I have seen people build Remington 700 rifles with a savage nut and what not called "Remage". Does any one make a Winchester variation? or any advice on how to proceed would be great.
Thanks!

On a push feed M70 it should be doable to use the savage nut system. On a CRF rifle I don't think it'd be worth while to have the barrel nut setup because it's a lot harder to re-barrel.

Devin Sinner, Sin-Arms had some shown here. He did one for my CZ too. He was really busy last I contacted him late summer and his banner ad isn't up.