28 Years of Daily Driving but now on hiatus. With a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
I'm not sure about VERY favorite, but I'm really glad I installed a dual reservoir master brake cylinder! Oh, and the heater, which I need to connect to the engine soon.
I am currently digging back in to a 1953 3800 (one ton) with a nine foot bed. I've owned it since 1979, and drove it until 1982 (or so). My wife got me involved in restoring it back in 2002, got the body removed and the frame redone, then things came up. Now I am retired and starting again. If anyone is interested I have photos on Imagur ( https://timwhiteblues.imgur.com/ ). I live way back in the woods in the Ozarks on 40 acres at the end of a 2 1/2 mile private road.
My favorites so far are the 5x7 mirrors on stock arms. So much better than the original small round ones, you can actually see what's back there when backing or checking traffic. And of course the T5 transmission. If your AD is fairly stock and a true driver, you really should check into this fairly easy and (relativity) inexpensive upgrade.
No specific images of the mirror upgrade, but the ones below gives a good idea of how they look.
1951 3600 with Clark flatbed, T5, 4.10 rear 1970 340 Duster 1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain) 1951 Farmall Super A
1954 Suburban: 1960 261 (with spin-on oil filter) and GMC 270 2-barrel carburetor seat belts on both rear seats front seat need seat/shoulder belts SM420 that was available but not stock/standard (added later by me) shift pattern on shifter knob 3.55 Ring & Pinion radial tires on original wheels/rims stainless steel brake lines
1954 5-window 1/2-ton deluxe 3104 pickup shoulder/seat belts 3.55 Ring & Pinion original number-matching transmission/block with "848" head, and, with cam and valve modifications radial tires on original wheels/rims stainless steel brake lines