I have a 1985 Nissan standard cab and I want to get a hard tonneau cover. Anybody know who made these?

Anybody know what manufacturers originally made tonneaus to fit this year/model truck and if there are any truck boxes that might be similar size and fit? Maybe a new Frontier or Ford Ranger?

Many of the older tonneau cover manufacturers from the 80's and 90's have merged or gone out of business. But there are tonno manufacturers who make lids for your vehicle. Here's a link to an info page where you can start:

http://www.truck-and-car-floor-mats.com/tonneau-covers.html

It lists most of the North American manufacturers of tonneau covers and has some additional info pages for the manufacturers.