if you are looking for project car then choose very carefully. make sure the car is not accidented, next would be legal status of car like original book, ownership status, tokens etc.
if 200k is your total budget(including purchase price and restoration) then its simply not enough.
quality restoratoin including body and mechnicals will set u back 125k-150k.
go for corolla ke30 (76 shape) with its original petrol (3k 1200cc) engine, its four speed and very nice engine with good mileage on cng.
if your engine is weak , rebuilt it. if u want to swap it then go for any toyota k series engine, 4k,5k,7k all are available with 5 forward gears. 4k or 5k with 5 speed will cost you 35-40k including exchange of your old engine and gear. pay special attention towards diff and shaft issues.
people also opt for toyota silver top and black top in these corollas but thats personal preference. in areas like mianwali and talagang you can find such cars at relatively lower price. and one more thing, hunt for a car which atleast has good interior to some degree. happy hunting.