Anything from that era will soon be a classic with associated spare parts prices.
The difference is that the parts are still much simpler in terms of complexity --- and thus ability to be reproduced --- than computerised controllers with their associated software. There are plenty of aftermarket parts for older cars and what isn't available could probably be fabricated easily or replaced with a suitable equivalent.
It will be far more difficult to do the same with modern cars, which have many more parts of higher complexity (and often deliberately designed for lock-in --- hence the DMCA.)
The difference is that the parts are still much simpler in terms of complexity --- and thus ability to be reproduced --- than computerised controllers with their associated software. There are plenty of aftermarket parts for older cars and what isn't available could probably be fabricated easily or replaced with a suitable equivalent.
It will be far more difficult to do the same with modern cars, which have many more parts of higher complexity (and often deliberately designed for lock-in --- hence the DMCA.)