It’s all to do with what the CAA will allow on a UK reg. As Yak11Fan says, no aerobatics in a UK registered 450hp conversion….G-IIIG was a standard 220hp version and also had CAA approval for ‘wing seats’

The rigs are approved and STC’d AFAIK…

Shame N54922 is being fitted with a cowling, always the best one IMHO, but a 8ugger to roll with only 2 ailerons……:D

Im with you, 54922 always my fav without the cowl, but as you say a ****** with only two ailerons. Big T did say there were plans to fit four so she would be the same as all the rest, when he has a couple of minutes to spare;)