Supply the vehicle identification number to the nearest dealer and he/she can tell you what ratio you have.
It depends on the gear ratio of the rear ends. You can find this out in the glove compartment of your truck. It should tell you there. Hope this helps you out.
One can find reviews about a 1984 Chevy Custom Pickup Truck on Kijiji. On Kijiji, one can find reviews of almost anything, including big pickup trucks.
autozone.com
1gcek14h4es108459
How do I release the frozen brakes on the drum of a 1965 Chevy 3/4 ton pickup
try Haynes.com
One can find a Chevy S-10 pickup by going to the official Chevy website and using the dealer locator to find a nearby dealer. Then, one can contact the dealer by phone and find out if they have any Chevy S-10s on the lot. One may also find Chevy S-10s online at Amazon, eBay, and Craigslist.
www.the12volt.com
which fuse goes to the tailights on a 1977 Chevy silverado
that is a dealership only item
In a manual for that vehicle.
www.usedpartscentral.com/used_chevrolet_parts.htm and www.ebay.com are two places where you should be able to find a seat for your 1979 Chevy.