Crossley Bros Ltd commenced motor car production in 1906 but during WWI produced Beardmore and Bentley Aero engines. This led to the aquisition of premises at High Lane, Heaton Chapel, subsequently renamed Crossley Road. In 1917, Crossley Motors Ltd was formed to manage National Aircraft Factory No 2. as it was known.
In 1919 it became the Willys Overland Crossley plant. The factory was large enough to include a covered test track! Willys Overland Crossley produced over 40,000 vehicles between 1919 and 1932. The building was sold to Fairey Aviation in 1934.
Looking at the map above, you can clearly see the railway tracks (LMR), Wellington Rd (also known as the A6) and Crossley Rd.
Looking at the interactive Google Map below, especially in streetview mode along Sir Richard Fairey Rd (Click View Larger Map), it would appear that the original buildings no longer exist.