The 6600/570 slide is 22-1/2" long. Unfortunately, we do not stock. We can special order them for you but we will have to bring them in with a stock order and we will have get a full box of 20 pairs. The 30754-05
is 22" long and is stocked. The rear mount brackets sold in lefts
should be able to make up for the the slide being a 1/2" shorter.
If you want to order or get a quote on 6600/570's please call us at 1-800-708-6649 or email us at firstname.lastname@example.org