The J2 is J3125 which is listed in the Register with the note being rebuilt 02.
If the other car is a P type then it certainly has a strange body - maybe ex an N type? PA0671 is listed in he the Register but there has obviously been no news for a long time.
That’s good my old J2 is being restored. Re what may be PA 0671, these photos were given to me by Brian Rhead, on the back of each photo it states the chassis no, circa 1972, the owner and in Brian’s hand 21/9/07. I have no clue where he got them from. The cars parked behin£ would suggest the date is correct and European. Ash.ey