Having problems with auto box and fed up with it was just wondering if the LT77 will mate up? Already have box from the 19J engine so could use flywheel and stuff from that but will it fit???

Iv got an LT77 on my V8 but its one from a Range Rover with the rear end of the Defender LT77 on it to retain the original gear shift, Its a different main shaft to the diesel one.

Not sure if you could just swap the shafts? So convert a diesel LT77? Might be worth asking Ashcroft, very helpful. They told me what I needed to swap on my box for the Gear selector.

You could buy a conversion plate for a series. This will fit your 19j gearbox. Plenty on ebay usually.