Congrats on the OBS!! One ton makes a difference for the front axle (TTB vs solid), nice score! Appears to have a leveling kit on it too? Auto or 5spd?
They are certainly great trucks!! Check the valve cover gaskets. They have wires running thru them and is a common failure point. Sounds like you've got a good list of mods. These trucks respond immensely to improving air in and out. Along those lines, I'd look into a full exhaust with CAT delete if you can get away with it (ooohhhh the sound!), and a nice intake like Tymar or a DIY similar. If you want a cleanable filter, avoid oiled setups. I like AEM Dryflow.
I like the tube type side steps like what Ranch Hand sells, but could be easily made in your garage.
Go down to the local international dealer and pickup a spare CPS (Crank position sensor) to keep in the glove box.
Once done with the air mods, I am sure you can pickup a good used tuner for it that wake these trucks up! I was pretty happy with my SCMT, but I think dptuner is a better product and customizable and shift-in-the-fly.
As for brakes, you don't have to go
to get good performance. You don't really need drilled cyro'ed rotors, although slots wouldn't hurt anything. Oh, if the truck sets for a week or more at a time, look into the 5W battery tender. It'll pay for itself the first time you DON'T have to replace batteries.
I'm excited to replace my tow rig once we get back to the States, but I'll likely be looking at new or near near. They just have much tighter control on performance mods these days :thumbsdown:
looks super clean. Hard to find that body style not beat to crap.