At Salute 2023, Renedra had an offer on Gripping Beast plastic box sets. On the Lead Adventures forum someone had used the Goth Elite Cavalry as Elven Cavalry with a suitable head transplant..
So a box was added to my load.
The box is of standard dimensions and contains four sprues, each sprue builds three cavalry figures.
The head/body joint is a flat iron shaped neck on the body and a corresponding flat area on the underside of the head.
For elves, the helmeted heads from the Oathmark Elf light infantry was used. They have a ball joint, so a pilot hole was drilled into the neck part of the body, and that was opened up with larger diameter drills until a 3mm drill made the correct size for the head.
The horse had a feather from the same sprue added to the head with the feather projecting back between the ears. I did contemplate making them unicorns, but they were not bulky enough.