Its Ok I can post details here so that every one can benifit...
bike was from Family used by Grandpa but my dad purchased it just as a gesture so that GrandPa were selling it to some mechnic but I perusad that bike must not go... it was all genuine and was purchased for 35k then stayed with us like 5 years in orignal condition then I finally got signal from dad that I can use it... so
1 - I swapped engine with a Rebel/NightHawk CB250 Engine (cost all over including engine Price + fitting + exhaust Bends + CDI unit = 22k)
then Bike started gaining top speed it never before and hit 140~kmh and meter went Needle got broken
and bike became unstable because of slim tyre.
So I decided to modernize its look and Grip of Road :
Changed : Tank,meter, Handle,seat,Signal, Tyres (before it was 80/80-17 now it is 140/90-16 tubeless),Rims (upgraded to alloys), Brake(upgraded to DISC both), Front back beams, Front Shoks, rear shocks, rear Swing Arm for Fat tyre, grips 
these cosmetic and Brakes and wheels costed roughly 60~k hardly ...
I have went to Faislabad after then Gujarawala, Okara and many other places, then finally decided to change its rear according to Rebel Design but right now I dont have time for it so packed it and hibernated it ...