I found this thread at the link below interesting...and at the bottom a list of other threads on the topic as well. I will have new lines and new MC, but the new hoses and wheel cylinders have had new Dot 3 in them...trying to decide if flushing them and going to Dot 5 (because I don't want to ruin my paint job) is a good idea. Some say no, some say it can be flushed successfully. Good luck!

http://www.corvetteforum.com/forums/...ake-fluid.html