Has this mod been done with any other restored Spits?

It has Ant.

Basically the same modification used for the MK.IX trainer, fitting tanks (about 25/27 Imp gallons per side from memory depending on the installation) in the redundant cannon bays.

MH434 had it done under Tim Davies ownership, whilst ML417 had the mod also, plus PL344 had it done whilst under ARC’s care.

(I seem to recall this mod was done under rebuilt for Charles Church, but removed when PPS did some work on the airframe when Kermit Weeks acquired it)

Also PL965 had this mod, as the original leading edge fuel tanks were not fitted during the rebuild.

And a few of the MK.XIV’s restored by Historic Flying in the 90’s have had it done as well if – SM832 & NH799 I recall correctly.

Cheers

Paul