Just change the piping and pressure wash the fins on the intercooler. Good as new. My fg had 200000 km on it with original piping. With 10 psi going through them The pipes still hold but I noticed when I took them off that the hot side ones get really soft when hot, so soft you could nearly poke your finger through it of you pushed hard enough. I don't feel like looking like a dick if I gave it some snot and a hole blew out a old soft pipe. It would still be drivable to get home but then you'd have to order new pipes and wait a week until you drive it again.
So new piping is just a preventative measure really. Some people recomend a new cooler but because you get hit with Ford FG xr6 turbo tax expect to pay through the ass for a intercooler that will fit properly.
I still use my stock one but it's only a daily driver, the stock one becomes very useless very fast with spirited driving. And it only cools efficiently at 60km/h or faster. Anything slower and heat soak will turn your pipes and cooler into a hot plate.
TLDR
Get new pipes as a preventative measure and get a better intercooler if you can afford it.