I believe the TSD08100G is made for a specific make/model year Dodge, this is what I just purchased from Parley's. This does come with hose, fittings, wiring harness, and mounting bracket.
The TS100G is a universal kit, not sure what that includes.
I did a lot of searches and they do not make a kit specific to RV's, so you will have to improvise anyway.
Either way I needed other "stuff" since this is a DP install.
My coach didn't have an extra bung hole for a return and I didn't what to interfere with the OEM return so I opted to use the vent hole as a return. My lines were #10 fittings, the pump comes with #8, so I had to get an adapter fitting and also had a 10' suction line made with a #10 and a #8 on on end. I decided to use a wire braided hose for the suction line as it was 10' and I didn't want to worry about it collapsing.
So I ended up with some extra fitting and ~8' of hose left over. Not a big deal, I'll keep them with all the other extra stuff I have.
I've completed the FASS install but still have to bypass/disable my OEM lift pump, have parts on order to do that. Also have ordered a fuel pressure gauge.
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi