Hi Mark, you lucky guy! When you say Group 1 may be you mean Grp 1,5 or Grp 1+ if your car retains some bits such like a big Weber 48 IDA carb'.
Sure you will receive great help from here. Did you weight the car with or without any ballast? Do you know if the car retains its original CC shell? You could also have a look to the homologation form # 5336, free download on the FIA website (consultation only).
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