1lakh to modify your fX....
you can change its engine with 1000cc charade engine...for about under 20K with gear box and ajustments..get HID xenon kit for ur car for under 15K,get a nice music system,,under 15K,try installing 13 inch alloy wheels with low profile rubber for under 25K.and still u got 25k to spare more..get some custom made headers(3000rs),exhaust(1000) and intake(1000rs),,how about a large multi gauge techo meter with gear shift light for 5000rs,and yea ..the best thing,, in peshawar you can easily install honda civic sunroof to any car for just 12000-15000rs...
here is how you should spend ur 1 lalk modifying your beloved suzuki fx...
correct me if i am wrong 
cheerz