Engine capacity increases meant more torque rather than speed. The Aspencade (the one with all the junk on it) was considered the ultimate development until the GL1500 turned up. GL1200 had improved handling (at the price of expensive tyres) and new four speed gearbox with overdrive. Engines have run to over 100,000 miles, so many good ones left.
1980-88, 1085/1200cc flat four, 83/94hp 120/115mph 40mpg