'84 325e 2.7i swap questions

[The Humjet]

You would get more power. But it will be still fairly restricted, but more can be made.
Cast 200 head is what's found on e30 325e and e21 323i.
Cast 731 is what was found on e30 320i and 323i. They had a similar casting to the 200 but with larger ports.
Cast 885 is found on e30 325i they hard a further increase in port size and larger valves. But a drop in the compression ratio. Good for turbos but not so much for NA.
There has always been a debate whether to go for the 731 head or 885 head. But there is only a few HP in between them at the end of the day.

[Varinn]

Hmmm, didnt realize there was a difference between e30 and e21 323i heads. So the e21 would more so allow me an extension of rpm's, rather than an actual power increase?

[The Humjet]

The 81' 323i head is basically the same head casting as yours. It will allow the 2.7 to rev more due to hotter cam, more cam bearings and better oiling but it won't flow much better since valves and ports are same size.
Try and get a 325i head. Or e30 323i or 320i head.

[dirty thirty]

Throttle body, crank sensor, trigger wheel and I think some people use the I cooling system.

[Varinn]

Hey, I've got an early model eta with a leaking cam seal right now and in the process of fixing it I'm considering doing the conversion to an i head.

I've been offered a low mileage 323i head and 325i intake, electronics, etc from a friend for dirt cheap.
My engine is an '84 2.7 in good mechanical condition
The head is from an '81 323i, I would likely do a refresh before install
The rest of the parts are coming from an '88 325is with a running donor engine

As far as I've heard I'll be needing to grab the intake, injectors, dme, harnesses and obviously the head. What am I missing?? I'd assume that a pressure test would be money well spent, as well as the obvious head gasket, bolts, intake gaskets etc.

I have all tools, access to a hoist and a group of friends that are BMW techs (and the source of the parts), all I need is confirmation on the required bits to convert.