I retrofitted an AOD in place of a C4 in my hotrod Ford Cortina.
Len at Lentech sold me a valvebody with an overdrive delete feature which disables overdrive whilst you have a solenoid energised and re-enables it when you switch it off. This way you get 1,2,3 for the strip and it doesn't shift into 4th.
He also sold me a non-lockup converter which helps the thin inner input shaft live.
My AOD was removed from a cutout V8 and functions fine.
You might think his gear is pricy but it is top quality and you won't be sorry. Ask him to install the 'accumulator' plate for a softer 3-4 shift. Also get him to supply either an 'A' or 'B' servo if you're donnor AOD has a 'C' servo. Alternatively he can sell you a fully reworked box if you want.
http://www.lentechautomatics.com