Hi there
The pods had the standard 14-inch pick-ups, so, in theory, they could fit anything with a NATO pylon.They were, as far as I know, speed-limited to slower aircraft.As an example, the GPMG pods could be used on the Marchetti beyond the aircraft's Vne(Velocity Never Exceed) of 235 kts, which is pretty bloody quick, when you're diving at a beach at Gormo.In theory, they(the gunpods) could be fitted to a Fouga, which was good for 360 kts (work it out in MPH...as fast as a Spitfire!) but I don't know if they ever were.
regards
GttC