The hardest part was getting the hot water line to curve under the shower to the water heater. I plan on building a box to hide the new hot water and the original cold water lines behind the toilet. PEX and the push-in connectors are awesome. Went camping a couple weeks ago and never saw a drip.
Lines are connected and shower opening is braced with corner brackets from Lowes.
Cold water connection.
Hot water line going into bathroom behind the toilet. Original cold water line is shown below it.
Hot water line going from behind the toilet under the shower.
Hot water connection at the water heater.
Door closed, looks factory installed but I didn't use silicone caulk like they would have.