@windforfun .
no - re materials on fuel lines. from 70-74. all used same clear plastic with a stainless steel end up near the tank.
factory changed them when they shifted fuel pump to front to a high pressure fuel hose material.
you would be unusual in having still flexible lines all the way from the tank to the pump if the pump is still in the area under the engine bay.
i have a car, of similar mileage to you and which didn't do much for 16 of the last 18 years. the lines where they emerge from the tunnel and travel across the passenger compartment firewall to the fuel pump location are the vulnerable area. subject to radiant heat from the fan housing casting. thats the risky part. also the little lengths of plastic line in the engine bay. these get cooked a bit too. not as bad as section under the car though.
i pulled mine out two years ago. all the stuff in the tunnel was fine. still almost factory new. the stuff exposed was not something i wanted to risk running fuel through anymore.
@Jamie great looking car.
about the only thing i can think of might be to take a look at CV joints and see if they need repacking. i did mine. similar story to your car. brake fluid change as per superhawke suggestion. rest of it - don't fix something that ain't broke. but maybe pay attention to all fuel lines.
enjoy the car. its beautiful.
Yes. Still soft & flexible all the way (fuel tank, tunnel, & engine bay). I've been ALL through this car to the tune of hundreds of hours. Maybe it was the Astroglide that leaked onto the lines while having sex with my wife. I guess I got lucky, as Clint Eastwood would say.