My dad has an '86 Chevy Scottsdale with a 305, 3-speed auto, and 2.73 rear end. That has got to be one of the most gutless things I've ever driven. But it hauls stuff, which is what I need, although not often.
I think that the '85 was the first year for the 4.3L V6. I'm not sure. I know that the 4.2 I-6 was a great engine, but we've had a few 4.3s in the family, too. I am fine either way. If it has the 305, 307, or 350, I'll be fine, too.
I hope it has limited slip and has had the tranny and differential fluid changed recently. That would be an added bonus.
Of course, it all depends on if the price is right.