using TJ rear brake lines as extensions

I read somewhere earlier that you can use Wrangler rear rubber brake lines (that go from body to axle) as a extension replacement in a lifted XJ. While dropping the axle (jackstands under body and springs and shocks still intact) I noticed that the rear rubber brake line was being stretched . I'm sure that this is OK for street driving, but what happens when I start going off-road and articulating ?
So am I correct, are the YJ/TJ rear brake lines a direct replacement to solve this problem?
BLUTO

BTW... 2000XJ, AW4, 242, 3" OME lift, 31x10.5x15 ProComps

Dont waste your time!The best line is from a 96 Dodge Dakota.Its about 6" longer and is a perfect fit!

rubber brake line

Thanks RCP PHx ! I can get them cheap with my employee discount.
BLUTO