OK so a bit of a change...
The garage put the car back together, put some fuel in and it was weaping from the side of the tank so now i need a new tank and sender unit. I have collected as i cannot afford their costs for a new tank and they were unable to fix the sender unit so i didnt fancy paying another £200 to get the tank off and on and not have a working guage.
I have found the 90 specs are the smaller senders but when i have sent across the below e bay link the garage have said this is not the one on the car - Any ideas what the above sender is??
https://www.ebay.co.uk/itm/276617395844
£2k, down on bits for this car, when its ready it better has be fun as its driving me insane at the min - Only went in for an MOT ha ha