Lately I have been getting the itch to buy a late 90's 2wd s10 eclb, thinking of putting a 4.8 ls motor in with a 5 speed. My thinking is that it would be a fun truck, yet light enough to still pull 20-25 mpg on long trips. The 3/4 ton work vans that I drive have the 4.8 and even hammering on them - the dash says that I get 18-19 mpg. That makes me think that the 4.8 in a light s10, tuned, could be pretty good on gas. Thoughts?