Facetti prepared 308's ?

If any group of people know the answer to this, it will surely be you guys!
I am trying to find out how many 308's were prepared by Carlo Facetti, for either rally or track?

Clearly the Carma FF Biturbo is well known, but how many others (Grp 2 and Grp 4) were created?

I know of 18855, 18935 and 20457 that were track cars.... And there seems to have been a yellow Grp.2 rally car for the 1984 Monza rally (unknown chassis number).

Over to you guys!