Steve Wilkinson is manufacturing new transaxles for GT40’s, Panteras, and other mid-engine cars. The new transaxle is called GTT and comes flipped for GT40’s. Most of its parts are interchangeable with a Pantera transaxle yet it has improvements including a stronger case and a 70% locking differential. I think they are starting to become available. The attached photo shows the new GTT transaxle and the link below is to the GTT website that is just now coming online.