You have venturi sizes of 21 + 23mm, the 2L version fitted to the sierra/granada 1989-1991 has venturi sizes of 23 + 25mm, is also a TLDM carb, and has electric choke as std.
I would say 99.9% that the carb will bolt straight on, if not he lecky choke certainly does.
The problem you will have is the choke is not fed with 12v, it is fed normally by a dedicated supply tapped from a single winding in the alternator, so is about 8 volts, this is also the one used to feed tachos on diesels.
feeding it with 12volts will turn it off well before time, a way around this is to use a older ballast resistor unit in line from a older ignition system, as the coils on these are around 8 volts, so will cut it down nicely.
The TLDM is actually quite a good carb, the only major prob they have is the vac secondary is prone to seizure.
tabetha