All I can tell you is these are the original OEM Slush Mats that were made to fit the Crossfire. They install in the footwells and are secured by the same snaps that hold the OEM carpet mats. Are they custom fit? As much as Chrysler could do. These were originally only available from a Chrysler dealer or an authorized Chrysler retailer. I am totally satisfied with the set I purchased & have in my Crossfire.

Not sure which version of WeatherTech you're referring to. If you're wanting a set that have the sides that essentiaily serve as a "catch-all bucket" for anything that spills onto the mat, like the WeatherTech DigitalFit Floorliner, the OEM Slush Mats are not designed that way. The Chrysler OEM Slush Mats are more like the WeatehrTech All Weather Floor Mats that are typically custom made for a vehicle. You will not have to trim anything on the OEM Slush Mats. They just drop in & fit, including secure snaps.

There is a small flap on the left-side of the driver's mat that is suppose to protect the foot rest for your left foot. This sorta lays there in my Crossfire, possibly because I have them sitting on top of the Carpet Mats. Others that are using these instead of the Carpet Mats can state how the mat fits with the foot rest.

You're probably not going to find anything else out there that even comes close to this set.