Evening, I picked up a ruger vaquero, ss, 7.5" in 44Mag, A while back, im wanting to put a power custom Bisley style low spur hammer and trigger kit in it, but my vaquero has a XR3 style grip, so do I need to order a bisley grip frame along with the hammer and trigger kit? by the way this is my first revolver. Thanks for any help! Jeffrey.