Dear team,

I am from pakistan-karachi got a mazda 626 1982 sedan which has original 2.0litre 80bhp engine i want to increase the bhp's and need to shift to anyother japanese engine which would fit my car engine compartment best. any suggestions?
i am preferring 2.8 or 3.0 litre. kindly advise keeping in mind that is the car capable of taking such forces if i upgrade.
your kind advise is appreciated.