EFI Magnum engine/trans in old A-body (65 Barracuda).

I copied this from the thread I refered you to.
you will have to look there for photos.
I used it on my LA 360 for a year.

"This is info that I came up with, so it might not be 100% right. The A518 was used on both 5.2/318 and 5.9/360. The forward clutch pack in the 318 version has 1 less clutch disk than the 360 version, but you can use alot of standard 727 parts so its pretty easy to get the pieces to upgrade. I was told either one would be just fine for a stock 5.9.
From the start up thru 1992 they were non lockup converters and used a 2pin connector (on left side by shift arm) to control the OD. so the 2 pin only needs one switch you have access to for on off.
93 thru maybe 1997? they used lockup converters and a 3 pin connector. These you need to to control both the OD and lockup. Here is a link to some very good info. http://www.transmissioncenter.net/SwapInformation.htm
On the right side of the trans you can see the pressure switches that came with their kit. The vacuum switch is on the cowl behind the carb. I just tee'd into the distributer vacuum line.
Somewhere after 97 the are electricly shifted so you need a late computer or stand alone controler.
Aftermarket lockup converters are more expensive too, right now a TCI Sat Night Special from Summit is 243.00 and the Lockup one is 420.00, and there is more off the shelf selections for non lock 727s.
I think you would be happy with either one.
Lockup will be more expensive overall but has the better gas mileage when crusing.
One caveat about a nonlockup is if you run a high stall -say 3000- or so, in OD you might be crusing around 2500RPM and slipping the convertor most of the time. Obviously a lower stall convertor or lower gears are needed for that not to happen.
After I said all that here is a string of photos of my floor pan mods just to scare you.
Unfortunatly you have to do something like this, the a518 is way fatter in the OD section.
I made sure to keep it compact so I could keep my bench seats."