Many do not even know that Buick Division of General Motors produced the Grand National on a platform other than on the Regal, but there was a very unique Grand National built in late 1985- the 1986 LeSabre Grand National. 117 (or 112) copies were built to qualify the new, first. year 1986 LeSabre FWD Coupe body for NASCAR competition.The main reason for building the 1986 LeSabre Grand National was to get the new body with modified rear quarter windows sanctioned for Winston Cup racing that year. The modified windows gave the car a streamline advantage over cars with the large rear quarter windows All LeSabre Grand National were produced in December, 1985 in one run, from one run sheet - some of the first FWD LeSabre Coupes produced at the then brand new Buick City plant. Serial numbers are sequential or nearly sequential and all have the same exact options.Around that time, Buick Motor Divison changed its marketing strategy from a performance to luxury car image and cancelled future LeSabre Grand National builds. Only the one production run of LeSabre Grand National was completed and Buick decided to build no more. As such, the 1986 LeSabre Grand National is the rarest of Buicks wearing the Grand National emblem and one of the rarest of all "modern" era Buicks.This info is from a Buick website. I was given the info from the man I purchased the car from. .