We can provide either a "standard" or a custom-tuned chip for your truck, if you like.
Typically those 1992's tend to be speed density systems, so if it's got camshaft changes, etc., then we prefer that it be converted to mass air. But if it's a a truck with the more typical typical bolt-on mods (intake kit, cat-back exhaust, underdrive pulleys, E-fans, etc.), then we can tune it even if it's a speed density system.
Give us a call at our number listed below & we can go over this in proper detail with you, so you'll have the info you need & can give that some thought.
I hope that info helps, & good luck with that 5.8 truck!