" 1997 3000GT " my guess is it's a Pontiac,
Mopar not Pontiac.....1997 Mitsubishi 3000GT, Mitsubishi and Chrysler merged and built the Chrysler 3000 engine and a car. The engine came in 3 variants "single over head cam"," Dual over head cam", and "Twin Turbo Dual over head cam(which came with all wheel drive)" Chrysler's car was known as the "Dodge stealth" and Mitsubishi had the "3000GT". The one I have is rare for it has the black on black interior and red body, it is 5 speed standard tranny not automatic, and has the dual over head cams engine, none turbo model.
Replacing spark plugs in my 03 Malibu, it takes forever just to get the boot off, probably the frist time since it was made.
Sorry to hear that, I know the feeling well. On the 3000GT in order to change the left bank of spark plugs you have to remove the intake manifold, a real pin in the rear.
My first car was a Pontiac a 81 Pontiac firebird with v8 suspension but 6cyl. engine

I live not too far from Woonsocket, they have some good smaller car shows there every week in the summer.
I like going to Mass and new Hampshire for the bigger car shows though. My Faviorite older HotRod is a 69 Plymouth barracuda with a hemi 440 sixpack [wipes drool]