There are two lines, best to just replace them both. I can’t speak for everyone, but I and many others bought aftermarket hoses that don’t have what Dodge calls a quick connect fitting (that tends to eventually leak) to replace the factory ones. It’s been so long for me that I don’t remember the vendor. I sort of remember paying < $100 for the two, but I see they are now $259 - $300 for the set in braided stainless - mine are not braided stainless, they are a black high pressure hose. IIRC. You can easy have these fabricated locally for much less, I think even NAPA does it, if not they will know who does that is local to you.
Many here bolted them right on without any drama. I couldn’t see or figure out how to get my wrench on one fitting so I had my mechanic bolt them on for me.
Use Google and include Viperclub in your query to see the many similar posts to yours.
I think JTSVP (JTS Venom Perfomance) was the main place that offered the hose adapter kits. The main thing you need from the kit is just the adapter fittings, the hose you can get anywhere as mentioned by BYAIC. The adapters convert the pilot tube style fittings on the pump and the fan module to more typical AN/JIC style fittings. Then you can just run AN hose between them. The JTSVP kit has hoses for both the pump to the fan and the fan to the rack, but I only replaced the pump to fan one as that's the only one that gave me trouble and I preferred the stock lines for routing and general fit. I think I got a Viper truck kit by mistake though because my hose never really fit the way I wanted. I ended up having a new one made that used the factory formed end on the fan module (glad I kept it) and just converted the other end to an AN fitting. Routes and fits great.