The Treq STS and Treq ST1 bucket seats are currently being upgraded. When new stock arrives, both seats will move away from the triangular shaped seatbelt holes, and adopt the hole outline that has been present on the STX for some time already.
The new holes are a little bit bigger, and flatter on the bottom side, meaning better compatibility with the increasing popularity of seatbelts and seatbelt tensioners on sim rigs.
