Whether the engine is original or not is a separate question, but the carbs certainly aren'tby Mike Frank - Jaguar E-Type Forum
On the '68, you need to slide the seats all the way forward. Once done, lean the seat backs all the way forward. There will be two screws on each seat securing the rails to the floor. Once these are removed, the front is unhooked by pushing the whole seat assembly forward. Then the seat simply lifts out. Be careful not to lose the thick spacers between the rails and the floor pan. Mike Franby Mike Frank - Jaguar E-Type Forum