First machine I owned was a new BWA like that except mine was a 17'10" with folding wings. The BW was an older model that had a different location for the leveling spring on the hitch. The BWF was built to allow the disk gangs to flex some in rocks and also came in larger sizes. I liked that disk back in those days for working down sunflower stocks. not the best at cutiing, but in the right conditions it did a good job. The new disks that Frontier has resemble the BWA.

I see that one has them cone blades. not one of JDs better ideas.