Thanks. The other categories have leaf springs. I have found it difficult to read any clear description of the TF rear axle. According to articles that I have read a riigid/ solid rear axle has the differential as part of the axle mechanism, not fixed to the rear subframe. But I have been unable to locate any documents that gives details of the TF configuration. Marketing docs and most published specs are useless in this regard.
The only category which would give me any relief in terms of handicap is “rigid axle, trailing arms and coil springs”