Question on oil drain size


I'm getting into the home stretch with the turbo build and was wondering about what size I should do the oil drain hose and fittings. I have read things and some say -8 and some say -10. The turbo is a t-28. The fitting out of the turbo is a 1/2" pipe and I need to get either a -8 or -10 fitting for it and the pan. Also my pan is tapped to return the oil in the sump area of the stock pan but I've also seen then tapped into other areas not in the sump, does it really matter???
# 8 hose will work fine since the oil flow thru a turbo is not a large volume. it just needs to be free of back pressure or you will get smoke out the exhaust.