I'd say keep it since original lip is hard to come by and it's freshly painted. Brand new is over $600 a pop!! The cheapest knockoff Mugen lip is only hundred plus so just get it and save the CTR lip as a spare. You might get tired with the Mugen and realize that the CTR is better. It's original lip after all.
looking at turbo trend, nowdays s/steel intercooler pipping route seems to be it's a must. however looking at stock car manufacturer or some of the US turbokit manufacturer, they seems to be only using normal steel...