Best tip I can give for that job is to let someone else do it for you....
Be sure to tape off, or otherwise find some way to plug the ends of the lines, so no doo-doo can get inside while fitting them....#1 tip. Don't need any trash getting in the brake system.
The front lines aren't too bad...the rear ones are a royal pita. Body off is much better, but still kinda tedious. The rear line snakes thru the frame at the rear kick-up, which can create new cuss words. If you still have the old lines, you can get a pretty good visual of where they go, and how to get the new ones in there. Good Luck!
______________
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"