Sorry, my mistake, the car is an H reg XR2i which has had the injection removed and replaced by Webber 35's. It's not a crossflow....
I have been given an engine but I don't want to go to an 1800 because that would put me in the 2 litre class. Better to stay with a 1600. The present engine runs out of breath at about 100mph and would cost too much to get more bhp out of it.