sr20 swap

I have a 1970 ford maverick and want to do a engine swap from the inline 6 to a sr20.  Just wondering if anyone has any advice on what sorta stuff I will need to to a basic engine swap.  I know that I will have to fabricate motor and transmission mounts. Im manly wondering about the electronics aspect.  What would I need to keep from a donor car to make it run and drive so that I can tune it correctly.  Just trying to build something a little different than a american muscle car to drift with.

I'm not a Datsun guy.  I'm a Toyota guy.  However, having done a few (Toyota) swaps, I can suggest that you keep as much of the donor car as you can until you are done with the job.  ECU, harness, the harness parts from the ECU to the chassis harness, any relays or relay boxes under the hood, fuse boxes, especially those under the hood.  Read up on the kidz putting SR20's in their S13's, google up and read as many swap story pages as you can find.  I take it you're going with the Datsun transmission too.  Good plan.  Get the drive shaft, or at least the first part of it to past the first U joint.  Fuel pump, fuel filter, fuel lines (for the ends, if nothing else).  Find schematics on the donor car and your recipient car.  You'll need both.  The wiring is the hardest part.  For example, my 4AGE20V MR2 took 2 days to put the motor in and 2 solid weeks to wire it up.  The 3SGTE RAV4 took a couple weekends to swap the motor and maybe 8 months to do the wiring and the rest of the plumbing, but I wasn't working on it solid.  If I worked on it solid, I'd say a month or two, much of which was searching for and pouring over Japanese schematics.

Those things will pull a premium a week before Race Wars.

the magazine is running a series right now on 'swap science' outlining basically all the steps. As for electronics, the idea is that you get everything from the donor car (ECU, igniter, relays, fuel pump, resistor packs, all engine accessories like alternator and starter, all sensors like MAF, TPS, coolant temp, CAM/crank angle, etc) and use the donor car wiring harness to plug everything from the donor car in together. Keep as much of it exactly as it was in the donor car as possible. Then, you just have to make the chassis connections from your car to the donor car - like hooking up power and ground to the donor ECU. 

It's not the only way to do it, but it is likely the easiest. 

I would not attempt it with only an engine and transmission especially for a first time. Get the entire donor car, and even better, get the engine running in the donor car before you start. That way you know what you are starting with is good (and that you have everything needed to make it run). 

In reply to Dr. Hess :

thank you for the help. and the datsun transmission ill have to look into.

Use whatever Datsun transmission comes behind that Datsun motor in the donor car.  You will save one order of magnitude of work doing it that way.