1954cc

a V4(mk1) should be 1996cc and a pinto(mk2) 1993cc
You say it has a problem with the auto choke - what about converting it to a manual choke? You can still get the conversion kits in my local motorfactors!
Sorry i cant be of more help, but give it a few days one of our anorak/technical

members should be able to help you!!!
Welcome by the way!!
