Can check my dashcam to see what speed Housey and Gibbo did with mine
I remember yours been around 70-75mph, was same as my Clio, maybe a tad over 75mph on both on a later braking run.
If I remember right Mustang was around 90-95mph and my M3 was over 100mph as it not only come out corner with more speed, but it pretty much geared right with top of 3rd just shy of 100 and using 4th on some runs was just pipping it over a tonne.
The Jag will be very interesting as its mid-range power is insane plus the way it can put power down is unlike any other car I've driven and the first 4 gears are quite short been an 8 speed, so should see some nice speeds, probably won't stop at other end though.