I am pretty sure that photo is at maximum height but optical illusion/perspective may give a false impression. The underside of the Healey is below chest height for a 6 ft person - about stomach level. The extenders on the swing beams do not fit under the Healey unless you jack the car up first and lower it onto the swing beams with the extenders fitted. Even without them it is very close on clearance to get the swing beams under the chassis rails. I’ll take some better photos on my next visit to the car. Cheers, Guy