I hate to be the one who joins and immediately ask for help but I have never replaced any fixtures in a bathtub before and I know there are certain things that need to be done before attempting this job. My house was built in the 70's and the previous owner never updated or changed any fixtures in this house. I want to replace the drain, overflow, spout (which is cracked) and the hot/cold water handle. I already have the tool to remove old drain so I'm good on that and the overflow is off. I have verified that the spout is screw off and not held on by a hex. My issue is the hot/cold handle. This handle base has the tub to shower selector and the newer fixtures have this selector on the spout. Is it possible to install spout with the shower selector on the spout vice the handle? Also, there is no indication of the handle that is currently installed so I probably will not be able to install the same brand. Will this be an issue? An employee at Lowes was telling me that I need to put in an access panel behind the shower to install this. If anyone could help me I would greatly appreciate it.