I dug out my copy Of Teagle and Sprung's 'Fender Amps The First 50 Years' and checked out the pages dedicated to the '80-'82 30-75-140 series of amps.
Seems they had a 6 spring reverb . The 75 and 30 were both powered by two
6L6s and seemed to be designed by different people although were both channel switching clean/OD amps ,something Fender had not done before.Weird that they had 2 similar yet different amps rather than simple wattage differences in a single model.
The 140 watt head was the top of the Fender amp line when it was introduced ,rather expensive (200$ more then the 75 and 150$ more than a Dual Showman) and fancy.