When I pieced my system together, I used a jeep something condenser I got on ebay for cheap. I made a couple of brackets to mount it to the front of the radiator. The brackets are just flat plates (1/8 bar stock) connected to the radiator support with countersunk screws, the plates extend out an inch or so on each side of the radiator support and the condenser mounts to those plates using the rubber isolators. It is a tight fit. I remember there was an interference with the TOYOTA emblem mounting bolts, can't remember how I addressed it tho.
I have the factory AC radiator that was re-cored by a local shop. I have a 3fe with no overheating issues.
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