You're unlikely to find one that matches up well unless you get a grind to fit. Also the wood stock models only come with a 1/2" pad and for optimal recoil absorption a 1" pad is much better. If you went with a 1" pad unless you're ok with a changed length of pull some length would need to be taken off the stock.

Personally I'm always a little leery of shortening the stock (it can be hard to keep the cut perfectly square), but grinding a pad is relatively easy if you've got a belt sander. First one I did I got a handheld sander for $20 from a pawn shop and just clamped it upside down in my bench vise, though I've since bought a stationary sander.