there's never a NEED to blow out a brake line, but with you replacing all of your lines and connections and fittings, your brake system should stay sealed for the next 15 years or so. Well, SHOULD stay sealed unless you shear it on a snag in the road, it wasn't torqued shut like it should have been, or you left too much OR too little slack in the routing. See also stainless braided lines.
_________________________
WizAire CAI w/9" K&N & HV3, 2.5" d/p w/h/f cat, Cobra CB, PowerSlot slots w/Hawk HPS, GR-2s, GMPP handling kit, NextLevel STBs, Pilot Sport A/S Plus tires.
98 L36/MM5
RaC