Hi
i realy need some advice, i own a 1975 datsun 1200 deluxe. I live in South Africa and i would like to find out what i can do to the existing engin to get more power out of it. Ps I can't afford expensive things like a turbo etc.
thanks any advice would be apreciated

2x SU side draghts, branches, freeflow, modified airbox or race filter, blue print motor and reprofile cam.

Would this not cost me a lot and if not could you direct me to someone in south africa that could help me with this

Without the blue printing (Balancing), +/- R6500.
Try SAC (Steves auto clinic), I might be wrong, but I think they are one of the best.

Heres a link to there site: Steves auto clinic

Would doing this be cheaper than replacing the engine with a 1400 or a 1500 and will it give me the same amount of power as a 1400 or 1500

Carb & Exhaust might make an A12 as quick as a stock A14.

Your best performance per Rand will be to swap a larger engine -- a stock KA24E engine swap will outperform a modded A14 or A15.

Read this:
http://wiki.datsun1200.com/index.php/Engine_buildup
http://wiki.datsun1200.com/index.php/Engine_Swaps

If i replaced the engine with a stock KA24E then i would probably have to replace the diff and the gearbox.

How much would it set me back(cost) to replace the gearbox and diff etc.

If you go with an A14 or A15 you will also need to replace the gearbox and differential.

If you go with a larger engine, just make sure the gearbox is included. Sometimes a bargain can be had by buying a wrecked car.