sounds good...
rico f's build uses a 5.3/4L60E.
http://67-72chevytrucks.com/vboard/s...d.php?t=651164
Cecil uses an old school 350 tuned port/700R4.
http://67-72chevytrucks.com/vboard/s...d.php?t=642010
and mike t's truck is a carburated 5.3/700R4.
http://67-72chevytrucks.com/vboard/s...d.php?t=613249
in case you want to do some research. IMHO a 5.3/4L60 is just so drivable, that's the way I'd go.