Fitting Sierra adjustable top mounts

These are the top mount they i have ordered for my track car. Can anyone tell me if i will need to cut a bit out of my chassis/ strut top to allow them to be adjustable. They havnt arrived yet im just trying to get a picture how they work.. Thanks in advance

Check out my profile for pics so far..
Last edited by Shaggy's Auto Store; Jan 29, 2010 at 03:17 PM.