I have searched for this Info myself. The Sheldon brown links and history articles dont address the Technium stuff for some reason.

I will ask a LBS that sold these if they have any old catalogs.

I bought my 87 Technium 420 new and have managed to replace and upgrade worn parts with same era, barley used, Trash finds. Just recently added some Kelly take-offs. It has been very dependable and is still a very comfortable bike.