TBH i never ever recomend any one for swaps ..8/10 swaps go wrong and at the end people get nothing nd just headache + car losses money if sold with swapped engine .
No matter if Alto's engine is old or carby and it is powerfull as hell if tuned properly and slightly moded + for fuel economy in practical world nothing goes above 12-14 km/l with in city (except hybrids) and many pakwheelers are getting such economy from pkdm alto so in there is no point in swap....
Swaps are only gud if u had some 70-80's or more old car whose engine parts arn't available ....say no to swap and u ill keep ur self away from alot of stress 
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