There is a 83 GMC Caballero service manual on ebay.
<http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=34215&item=2450747546>

I have a 84 El Camino Conquista...how useful would this 83 Caballero manual be? Would my engine/carburetor/transmission be covered?