My boy had this exact same motor in his S10 about 8 - 10 years ago except he had a strip dominator intake on it. Truck was 100% stock. He ran a 10.73 at the track with a 2500 stall converter, a 350 turbo tranny, 3.73 gears w/ alburn posi, no suspension and a single jimmy evans 850 or 950 (Can't Remember) blower carb on it. Fuel - Pump Gas.
Installed a 125 Shot put him in the 10.20's - 10.30's
Thru a 144 baby blower on it with the 125 shot and it dipped into the 9's.
The major amount of work he performed went into the heads, mild port job, but polished the runners until you could see yourself intakes and exhaust...
Check out the very beginning of the video on my race space. there is a picture of the truck before they started installing the chassis work on it.