hey, i've got an xr-1 too, obviously with the dirty fingers. those pickups in that guitar actually sound really good. i put a miracle man in the bridge in my v and it sounds almost identical to the bridge dirty finger in the xr-1.
now obviously they're too completely different guitars, but i'm saying that you have some real nice pickups in there. i'd leave them stock and put some BK's in a different guitar if you have another.