If your 40th is the green like the green LX450's, similar to the '95 deep green - then yes, same family (esp the waterborne clearcoats of the '90's)
I just 'shaved' the clear to push it all out to a single ring of any shape that stepped down from clear that seemed solid to the areas where it had flaked / fogged / textured - like you say, really the higher raised panels on hood, the front of roof, then on the area above tailgate & some inbetween raised ribs the luggage rack mini strips mounted to.
Push out & shave it back, then a light touch (block sand, no air sander) - just to taper down the clearcoat 'step' & get into the good colorcoat & give a light tooth, quit right there.
- I initially was going to drag out the gear, but I found some old acrylic enamel clear in a can I never used for a past project (a jetski touchup) - so I cheaped out & 1 can did the job, plus I didn't have to mask off like when you use a fullsize gun (bought a touch-up size HVLP since, would have been perfect)
Sidenote, yes, 2K is the one I use as it really does lay flat on horizontal panels but on vertical panels & reduced it's alot like welding - don't get caught up in the process or you'll weld too hot or get sags/runs in the clear. Do it, watch your fan taper & get done & quit. ::Sidenote - it does say to use IR to kick it off (See it on the label each time used, I always wonder how nice it turns out that way), but I never have since I don't have the bulbs or a booth heater - so no experience with it 'as directed' - so it may shine up smoother than my way, IDK::
If I shoot clear from my gun for dark colors, I use a PPG one (forget the code) - but unlike 2K you shake, you don't shake the PPG. I've never shot clear on anything lighter than a bright red (I only do the darks to prevent sunfade).
If you're as lazy as me, a good size panel of posterboard with a clean edge is all I used to keep overspray off other areas, then just work from the top center out & down from roof to hood, so you aren't reaching over any fresh spray.
A couple 3 times doing this type lazy, low expectation type painting & you'll be surprised at final outcome.
For real paint jobs, materials mean everything - my dad sprayed some crazy $$$ PPG with real gold as metallic ($600/gal) as his 1st HVLP & 3-4th car in life, turned out really nice, you never would have guessed it was a retired guy in his pole building.
And for dents, final out come is all about your filler work - watch lots of videos, watch the materials they use to shape curves (a material we call 'fart rock' is our favorite sanding material if you can start a curve on metal & carry over to filler/body butter areas).
HTH - It's a leap, but it's rewarding to see a job turn out nicer than you would have guessed, also you don't mind scratches & chips as much after a little practice.
I also worked as a mini-body shop guy for car lots in Seattle when I went to college down there, so I learned alot from the true body guy in the onsite spray booth, etc.
It really is like welding - once you know the basics, expanding out from there you can start to predict results & such.