Years ago I bought a "add on heater" for my LP hot water tank. I don't remember all the details, but the new element screwed in to the drain for the tank. Worked just fine.
You will need a booster in the rear of your rv. Unless they've changed the signal strength.
I am very happy with mine. Last outing one of my trailer tires lost pressure due to leaking valve stem. Tightened the stem pumped it up. Without the TPS probably would have had a blow out.
I replaced the steering box in my 2001 Imperial, it was a Sheppard unit. I bought the remanufactured unit from my local NAPA store. I cannot find the paperwork now, but I do remember the part # was on the steering box.
I had to replace a leaking Sheppard steering gear box on my pervious coach 2001 Imperial.
Bought it from NAPA.
If you need the napa number, let me know