Dude
Dude im damn near 40 .
Since you keep bringing up your age, here are a few facts,
I'm 65, been building 4x4s since 1972, have done close to 60 KJs alone, most no charge at all just helping "friends I met on line" .
did my first motor swap in 1969 at 15 years old, SBC into my 48 Chevy Fleetline with 4 speed and 57 Pontiac rear diff by myself, that I rolled drag racing 2 days before I was to go take my driving test LOL ( won that race though! )
Had my own " sort of garage, (an old grainery dirt floor, no insulation and big old coal stove) , that I did oil changes, tuneups, changed tires that I started about the same time . Stopped being a full time tech years ago to use my head instead of my back, do mecanhical work for fun now , when I want to or feel like it
So been around the block a time or two ( as well as you )