Quote:

the 4AGZE chargers are SC12s and aren't really suited for a L20B 2.0L engine - almost being stressed out in std trim on the 1.6L.

however, toyota got it right with the SC14 on the 2.0L 1GGZE which is capable of feeding 6psi into a 3.8L commy V6. these chargers are a much better option because they don't have to be overdriven as hard to produce the same amount of boost - and they work particularly well in a draw thru application.

however, if you plan on putting one of these babies on an A series, then you'll need to back the pulley sizes off a fair bit from std because the engine won't consume enough air to keep boost at a sane level.

so to sum it up you could

A series - SC12 with factory toyota pulleys or "under"driven SC14

L series - SC14 with factory pulleys.