Well my parents bought me a 1997 civic dx coupe back a few years and i've decided to sell it. I am looking for a older (mid 80's, early 90's) gmc sierra or chev silverado. They few i have seen have 305's in them. I do beleive one has a 350. What kind of performance can i expect from these trucks. How is the gas milege. They are all two wheel drives.What have they got for horsepower?