the original screw compressor of this engine is very good in its job if the ac tech knows what to do.
the condenser you installed is useless. it used to be sold as GL condenser and is not very nicely made. it has a tough time with R12 and dies with R134.
the dryer you chose is also never a good idea. the original denso dryers are worth their high price and so are the expansion valves.
the compressor that came original to this car was a big 10cyl denso item pumping R12 through a huge condenser and equally bulky evaporator and had nearly similar performance to old american cars. Converting it to R134 with the old style heat exchangets is not a good idea due to the runpressure of R134