Made by Borowski Race Engines, Inc - Dart's new LS Next line of blocks feature a handful of improvements over the GM blocks, but the unique main cap design requires this kit and hardware to mount a GM windage tray to the block. This kit also adds additional mounting points for a variety of pick up tubes.
In our experience, some nipping and tucking is required to get certain oil pump pickups mounted to the caps. Most commonly it involves reshaping and/or extending the pickup's mounting tab. Another consideration to keep in mind is the dipstick. The LS Next SHP has a dipstick provision in the side of the block. To use it (rather than either going without a dipstick or installing one in the pan directly) you need to cut a hole in the windage tray.
If your pan has a windage tray, we would suggest not using this one.