Except for the date, t looks a lot like the cover from 1998....
http://www.geoghegan.us/p35/geog/Modelik_P-35_Cover.jpg
I went and pulled mine from the archive and think the colors are improved (as well as the fit in problem areas). This thread is making me rethink some of the Modelik models in my stash -- especially the Texaco Oil delivery truck that I bought around the same time as the P-35 -- tho' I think that one was an early CAD design. Beautiful tho....