hey everyone i'm only 17 so i don't know a whole lot about vehicles but i want to do a tune up on my 89 s-10 blazer 4x4 with 4.3L.... i know i need plugs, wires, and distrubutor cap but is there anything thing else i need??...please help and thanx in advance.

Depends on how far you want to go. Fuel filter, change your tranny fluid, filter, change your oil while you're at it, and maybe even do a radiator flush too.

oh yeah, your differenial fliuds too.

while you're at it, check your belts, hoses, front end, and tires too.