Automatic transmission interchangeability

[asa572]

Anyone know if it would be fine to fit a FDH code tranny into a car fitted with an ESE?
Gear ratio's and final drive ratio's are the same and the only difference I can see is the
Intermediate drive which is 1.033 in the FDH and 0.978 in the ESE.

And after reading this below I am unsure if it will work because of the Intermediate drive

"If replacing this transmission with a new or used transmission, pay special attention to the transmission code. The code is a three character code stamped in a pad just above the starter flange. This transmission was available in several gear ratios for different engines and vehicles, so it's important to get a transmission with the same code or another code KNOWN to be the same gear ratios. If the gear ratios are not the same the transmission controller will assume the transmission is slipping and go into fail safe mode."

Any help would be appreciated.

[asa572]

Fitted the FDH code tranny today and it works fine.