front suspension was integrated with the bodyshell, a separate subframe housing the powertrain and front suspension (similar to the front part of the frame of GM's full-size, full-framed vehicles) replaced the earlier style. Although the front subframe design was unique for the Nova, the Camaro introduced a year earlier was the first to incorporate such a design; the redesigned Nova was pushed a year ahead to 1968 instead of 1969. The sales brochure claimed 15 powertrain choices for coupes and a dozen for sedans. Options included power brakes and steering, Four-Season or Comfort-Car air conditioning, rear shoulder belts, and head restraints. There were a few Chevrolet Novas built with the 194 ci (3.1 L), the same motor that had been used in the previous generations of the Chevy II. Sales of the 1968 Chevy II Nova fell by half. In 1969 Chevrolet dropped the Chevy II portion of its compact car's name; it was now known simply as the Chevrolet Nova. The four-cylinder engine was offered between 1968 and 1970, then was dropped due to lack of interest (besides its other usage in the Jeep DJ-5A a.k.a. the Postal Jeep or a marine/industrial engine) and to clear the field for the Vega. Far more popular were the six-cylinder and the base V8, which replaced the V8 offered in previous years. Several units were produced with the , , engine, four-barrel quadrajet carb and four-speed Saginaw transmission with a heavy-duty 12-bolt positraction rear as a "towing option' package. At mid-year, a semi-automatic transmission based on the Powerglide called the Torque-Drive (RPO MB1) was introduced as a low-cost option (~$100 less than the Powerglide) for clutchless motoring. The Torque-Drive transmission was only offered with the four and six-cylinder engines. The two-speed Powerglide was still the only fully-automatic transmission available with most engines, as the more desirable three-speed Turbo-Hydramatic was only available with the largest V8 engines. Nova SS The Nova Super Sport was transformed from a trim option to a performance package for 1968. One of the smallest muscle cars ever fielded by Detroit, the Nova SS now included a V8 engine along with a heavy-duty suspension and other performance hardware, priced at US$312. Optional V8 engines included two versions of the big-block rated at ; and at 5600 rpm and at 3600 rpm of torque, which went for US$348. Both engines were offered with a choice of transmissions including the M-21