16v Euro compares to the 32v well. The 32v has the edge on torque, but 32v cars are heavier later models. In theory 4v vs 2v has a max flow advantage of about 5%, but in practice the advantage is mostly low end where the 4v gets good flow at lower lifts.
Once you start messing with engine internals, cost of 2v mods are half that of 4v mods because you have half the cams, half the valves and lifters, half the ports to machine etc.
Buy an old Porsche and you will become quite adept at electrical work and general troubleshooting.
OTOH we are all in the same boat, so most issues are well documented.
My question was more of the type of work, mechanical vs body and paint vs electrical etc. I'm game for anything I can put a wrench to, and fine with electrical stuff, paint and body not so much.