With the picture of the Scion Senior I was reminded of the story, perhaps inaccurate but a good one anyway, of the cheif test pilot flying the 1/2 scale Stirling. He would be trundling along Soutern England ans a fighter would practice attack approaches. He would loop the 1/2 scale Stirling and get on the tail of the fighter.
This would leave a severly disturbed fighter pilot. Can anyone confirm this or shed some light?

Perhaps the (one) redeaming feature of the Stirling was its manoeuverablility. It could out-manoeuvre tha Lanc and Halifax at low level, and unladen, it was said to be able to out-turn a fighter. The M4 was similarly capable – its short, broad-chord wings gave it a good rate of roll.

The M4’s wingspan was 49 ft 6.5in (Spitfire Wing Span 36 ft 10 in) and it was reported by a Capt E Brown serving at A&AEE to be ‘the only 4 engined aircraft he ever looped.’ Other quotes were that ‘it was as agile as a fighter’ . Proportionally it looked odd to the Hurricane pilots who interecepted it, thinking it was a full-sized bomber. They were then out-turned. This may be the origin of your story, but I have not read about them being overlooped.
DS