Metal plumbing available for LR4 coolant system?

[M5Z3M]

My 2012 LR4 HSE Luxury (5.0 naturally aspirated V8, 150,000 miles, all original cooling system) is going into the local shop next week to address chronic coolant leakage (a couple of quarts to top it up after every local trip of 30 miles or so). The mechanics there are good, and they just did the job on a supercharged six LR4 for $2,500, using plastic replacement piping.
My question is whether anyone sells metal plumbing to replace the absurd plastic setup the vehicle got when it was built.
Any other tips I can pass on to the crew would be appreciated.

 

[Rover Range]

Can't be too absurd.
Made it 150k miles.

 

[Nechaken]

Can't be too absurd.
Made it 150k miles.

Might be the 2nd or third placement, though...

 

[ugmw177]

AFIK, the aftermarket only makes the aluminum replacemenet crossovers for the SCv6 3.0. Seems like it would not be that difficult to make it for the NA v8 but i guess the demand must be rather low.

 

[f1racer328]

Can't be too absurd.
Made it 150k miles.

I agree but the typical failure mode when the leak goes unaddressed is catastrophic.

 

[timc930]

CK the Jag F type forums, they have this for the AJ126, and possibly the 133

 

[itsaguything]

Is there really a need to have 2 threads for the same topic, @M5Z3M ?