Whoa, scary release!
All the new Deeluxe, and nearly all the older Raichle boots, are INTEC compatible. Not sure what you mean by "metal support", but you should be able to simply remove the standard heel and replace it with the Intec. The Intecs come with new hardware, including new T-nuts if you need them (although I doubt you'd need to replace the ones that are already there). With the new stuff, you shouldn't need to drill ANYTHING. I ride some older Raichle 224s and the only thing I had to modify was the cable hole - just bored it out a bit with my drill to accomodate the wider diameter of the cable. Everthing else lined up just fine.
See Michelle's "Sticky" here: http://www.bomberonline.com/VBulletin/showthread.php?t=16242
Good luck!