With your truck, anything from a 1981-87 C-truck or K-truck (R/V for '87 instead of C/K) is universal in terms of interior parts and components on the outside, minus the grille. The different grilles of the aforementioned years will still fit if they have single headlights like yours, but there are different styles of grilles. Stateside, RockAuto is a great place to find a lot of maintenance type parts. Auto Metal Direct is a good place for body parts, and Classic Parts is in good standing with forum members for square body specific interior and exterior parts like decals and smaller stuff like that. 1A Auto has all the seals, and they probably have instructional videos for them on YouTube. LMC Truck is also out there, but they're a mixed bag in terms of quality and fit/finish. I don't know about overseas shipping constraints with these various companies, but I'm sure that info is readily available.