you need to do some grinding and cutting on the CPS, first of all.. to make it fit. This way you can use the stock ignitor, and coil pack. Coil packs will need a custom mount.
Switch over temp sensors from the 7M (ECU and gauge)
Switch over 7M Oil PSI sensor
Switch over 7M knock sensors
Switch over 7M injectors (can run stock 440's without piggyback)
Use stock O2 sensor, or wire in 2JZ O2 sensor. Either will work (with appropriate clip)
Use TPS plug from 2JZ wiring harness
ISC is the same
7M or 2JZ starter will work- use appropriate clip.
Use alternator clip from 2JZ wiring harness
Use 7M AFM, or Lex AFM w/ 550's. (if you want to keep it simple.. should suite your goal easily)
Legnthen/shorten harness where appropriate.