[SilverMk2]

I don't see why not. The biggest question I'd ask is if you feel up to tuning on a standalone? This question really determines how much success you'll have with this. You do see some "barely used" AEM ECU for sale from people who answered wrong here. Don't forget some of the extra cost with the AEM to do it right (wideband, MAP sensor, etc etc). Also the 2JZ main engine harness is really expensive from Toyota like US$900 discounted (quite a bit more than the 7M unfortunately) if you are planning on doing that for your wiring. IIRC correctly you can scale the instrument outputs, although Toyota gauges are all pretty standard TMK.

 

[SilverMk2]

Some things I would do some research on is to see if the 1JZ harness plug is the same shape and pinouts as a 2JZ harness. I'd kinda doubt they would be the same. I'm not even sure if you could get just the 2JZ harness plugs to rewire it (a Fields harness might work here). I would recommend the wideband highly for the AEM. This way you can use the autotune feature. You don't need the entire fancy sensor package with the display and such, just the sensor. The other stuff like GM MAP sensors are really cheap. From what I understand the 2JZ base maps are good enough to barely get the car to run. They're not really good enough to just plug'em in and go a 100k miles with perfect driveability. Basically they're are just a starting point so you can tune from there.

I would recommend a vist to the AEM board and ask around. They've got a lot of people with a wealth of knowledge on the ECU. Plus you can download the software and manual and look it over. I think if you're not planning a monster hp car finding a stock ECU would be cheaper and less hassle. Where you'd find a loose 1JZ ECU would be a good question though