Ok, I do have good access behind the area at present, could make it larger and re drywall.. also, the shower side is basic white ceramic tiles, could replace them easily enough.. was wondering if anyone may be able to link a visual reference? WHat I’m getting out of this is I need to remove the h/c and diverter valves and fashion some pipes to come into the new one piece mechanism… just having trouble visualizing, I guess best bet would be to buy the part and take some measurements eh?