I should admit that I’m better at bodywork/paint & interior than drivetrain.
Of course the joy of each depends on the specific task. Having removed the intake manifolds from a few different Fiat/Lancia twin cams, spending an hour per stud on the ones you can’t see brought me zero joy. However, dialing in the carbs with a synchroneter after getting the requisite manifold on is something I can do all day.
I do like that the car finally at least looks different after removing the lizard skin texture of weathered paint with some 60 & 120 grit.
I have a comfy Danish modern lounge chair next to the car for fine cigar smoking and a 3/4 view of the work as it sits. Smoke, sand, smoke, sand, smirk...
I’ve done a couple motorbikes and some collision repair but never an entire car.
I’ll be testing colors along the way with 2k aerosol cans, I’m still not sure what color the car wants to be.