Herrett's and Hogues are fine recommendations for new wood. You might also look at the Jerry Miculek grips offered by "Bang Products", and sold through the Dillion catalog
http://www.dillonprecision.com/conte...rchVar=miculek
I found the Miculek grips just a tad large on a M28 Highway Patrolman - but then again, I'm a K/L frame kinda guy, and the M28 was unwieldy to begin with. They install just like Hogue's do, and look great on a gun.