4wd to 2wd hardline brake line kits???

[bL.A.zer90045]

hello all,ive recently been taking time off of my gbodies and am showing my 86 4wd k5 w/full top coversion/2wd conversion some loveive gotten all the front 2wd suspension done(bolted on,still have to make reinforcement frame bckets)and am currently looking into getting the brake lines(hardlines)routed/connected.can i use my existing master cylinder lines as well as the prop valve(4wd)and or make unions? or would i need to purchase(find in he yard) a new set of 2wd hardlines/prop valve? im also planning on using brackets made by member 'captfab" for a reardisc brake conversion that utilize 94-97 fbody calipers.any help/pics/know-how would be GREATLY appreciated!!!