Hey guys,

I think the f20c from the honda s2000 would be a good choice if plans for project is an all out Naturally aspirated motor and after not a too common conversion and if you don't mind using a non nissan engine.It comes factory with 240bhp and are costing around 5k for engine,ecu,wiring loom and 6speed gearbox package with clutch .As mentioned by D, they are heavy but into a 1200 datsun would be amazingly fast.

A dead stock Naturally aspirated Honda S2000 despite weighing heavier, has a quicker 0-60mph times and quicker quarter mile time than a dead stock turbo Ca18det s13/180sx silvia. And would come down to the drivers against a dead stock turbo Sr20det s13/180sx. Take of the turbos from the sr/ca and its a different story.In other words, can't compare an f20c to sr20de or ca18de.Best bang for buck if intending to keep the car and leave it NA in oz due to the 2.0liter non turbo limitation.

To build a non turbo sr20de/ca18de to f20c standards would cost alot just to compare to a dead stock f20c engine.so 5k for f20c engine/gearbox package would actually work out to be more cheaper,reliable,drivable than say 240bhp heavily worked sr20de.

Can only imagine the power to weight ratio of a modified f20c in a datsun 1200.