upgrading a 2.2E engine to a 2.2S on 1969 911S Targa

Hi,

I'm trying to understand the difficulty and cost of upgrading a 1969 911 Targa that originally came with a 2.2S engine that was replaced with a 2.2E engine when the original when bust. What do I need to replace and what are the most costly transformations (injenction has already been redone to S specs).

Has a classic car how important his (market value wise) the fact that the car doesn't have the original engine and the new engine is an upgrade. I've been told that this car will never be a classic and will Inevitably end up as parts.

Thanks,
Tiago

Not to be unkind here, but if the injection has been made to be "S" and the engine is still "E", I fail to see how the car runs. You see, the injection pump is "cammed" to match the intake and exhaust specs of the engine cams.

Yes, I just received the car and I was puzzled with that also but the car is working (so I suspect either nothing was done or the fuel injenction was broke and a new one was installed).