Those w/ D.I.Y. Intercoolers???

I've been contemplating this for well over a year now...and I recently did a new search on Ebay and came up w/ some new DIY kits that appear to have the piping already fabbed up for a mustang:
http://cgi.ebay.com/ebaymotors/Ford...015QQitemZ250191406202QQrdZ1QQsspagenameZWDVW
...did any of you guys buy this particular kit...and if not...how much actual fab work should I expect if I tackle this on my own...I don't plan on cutting my bumper, and I really don't want to cut any sheetmetal if possible...and I really didn't want to cut any of the piping, but I could always have someone else do that for me I guess

any information would be greatly appreciated

to cut that hole did you just drill and then use a jigsaw w/ a metal blade??? The metal doesn't look as thick as I would have thought...and what type of cutting tool would be needed to cut the pipes (if necessary).