I haven't owned an '80s pickup, but I had a number of '80s cars and wouldn't say they had any more trouble than anything else I've owned.
I drove my '88 Olds wagon until it had 172,000 miles on it, and aside from the mass air sensor failing one day, it was oil, gas and tires and other usual maintenance kind of stuff.
An '80s pickup is probably going to have a lot of miles on it, and I would not expect it to be trouble free. Too much depends on how it has been driven and maintained.
I currently own three vehicles that aren't listed below. A 2000 Subaru Outback, which my wife drives, a '82 Kawasaki 1000 LTD which hasn't moved in years, and a '75 Chevy van I bought for parts. I was just thinking I'm the wrong guy to comment on new cars because I don't own any, and probably never will...