Seat mounting in a Scirocco

I got a second hand Cobra Imola2 seat and am going to mount it in a MK1 Scirocco...my question is: Did you guys have to cut out the formed chanel where the old stock seat adjuster was? This is where I need to mount my seat and I just don't see any other way around it. Is this just what I have to do? I just want to be smart about this ya know measure twice and again and then look at it once more and then cut.

Thanks for your help.

Mike

some more info:

Seat not be mounted on a slider.

Part that needs clearancing is the formed piece that goes from the drivers side to the passengers side ya know that bump in the floor.

Thanks for your thoughts.