Complex sentence: At Bathurst this allowed the Commodore runners to qualify almost 3 seconds faster than they had in 1992 while the fastest Ford driver in official qualifying Glenn Seton (the only Falcon runner in 1992) could only improve his 1992 time by 1.2 seconds.
Split into simpler sentences: At Bathurst this allowed the Commodore runners to qualify almost 3 seconds faster than they had in 1992. The fastest Ford driver in official qualifying Glenn Seton (the only Falcon runner in 1992) could only improve his 1992 time by 1.2 seconds.