Mike!!! Long time no talk!
The buy 10 car thing..... Honestly, I would have to buy atleast that many trucks to build the one I really want as far as an everyday driver/general purpose truck.
SuperCab 4x4 late 70s F350
'77 F100 regular cab short bed 2wd (which I do own)
Mid-Late 70s F600/700 with a 15' dump bed (bigger version of my 1ton dump)
De Tomaso Pantera (built in Italy, powered by a Ford 351c)
Wife wants a Ford Escape & a '90 Camaro
So 6 isnt all to bad for a want list.
Gavin, HVAC (a/c & heat) isnts all to hard to learn or figure out. Just the moving of heat from here to there. High & low pressure, 2 heat exchangers (coils), dryer & some misc. crap.