Replace those corroded nuts with the new brake shoe eccentric locknut, sold individually, 8 nuts required per vehicle or 2 per drum. Fits a 10" and 11" drum brake setup. These are used to set the proper lobe adjustment on the eccentric so you can adjust your shoes. These are made by JeepsterMan in the USA. Fits:
The fan shroud looks like it is going to fit perfectly. It is very well made nice looking fiberglass piece, not lightweight. The installation instructions are confusing, in fact, completely invisible. However it's fairly intuitively obvious.