Awesome find on the mtn pistol!! They are hard to come by these days.
Yep that mountain rifles got a curly maple stock to boot! If you ever refinish it, get rid of that ring thats around the cheek piece, thats a kit rifle and that ugly curve was left there for us to deal with.
Heres my .58/.54 combo Mountain rifle. I used a different trigger guard to allow the use of my glove. Mine is an early model mountain rifle with a toe plate and a differently shaped stock.