4AF to 4AFE swap

[AE92SR516l]

I have was wondering if anyone has done a 4AF to a 4AFE swap? I don't care if you don't think its worth it i just want to know because I think i may end up having to completly gut the two wire harnesses in order to utilize the 4AFE harness because i think just about every component in the car is wired up with each other all the way to the ECU. I also want to know what they did with the fuel pump because the 4AF uses a mechanical pump in the engine bay and consists of no return lines, while the 4AFE uses an electrical fuel pump in the gas tank and does have return lines. Any suggestions? What about a custom wiring harness? Maybe a stand alone fuel injection system? Money isnt a problem I just want advice. Thanks much!

[Flashmn]

4A-F does have a returnline.
Its really not that hard, with a standalone or the cars own ecu you can make a separate harness for the engine.

[AE92SR516l]

Yea what else is wound into the engine harness that i will have to replace in order for the 4AFE motor to wrok. What do you think about the MegaSquirt standalone fuel injections system and engine managment?
thanks

[Flashmn]

I didnt get megasquirt to work... didnt get a RPM signal... so got bored and tired of it.