Trying to bring the A/C back to life.

Well I replaced all of the o-rings, drier, expansion valve and pulled a vacuum. Or at least attempted to pull a vacuum! It wouldn't pull any more than an inch of vacuum. So made a hose setup from an old manifold set and pumped compressed air in and found a large hole in the condenser! I pulled it out to inspect it and found the hole. Looks like it could be repaired. But I would rather upgrade it to a parallel flow condenser. People say it is far more efficient. I have a bmw 3 series parts car that had a working A/C system. The condenser is the same height as the factory dart piece. But it is two inches narrower. I don't really want to downgrade and use a smaller condener.

So does anybody have any experience with upgrading a condenser? It seems really straight forward. I think I just need to hit a salvage yard with some measurements and find something that'll fit.