I think you are going to have some issues if you are looking for a clean install.
Depending on your kit, you could have 5 separate pieces of carpet to install.
The main problem I see is that you are going to have to cut through the finished edging. That might be fine for you and if so, cool.
The next issue I see is the molded front portion. I have a feeling that too is not going to fit right and you are going to have raised portions that don't sit well. Again, that might be just fine for you.
If you are getting it for next to nothing, then I guess it won't hurt to try?