Re: some questions for the guys who have done headers
First of all, go here --> http://www.cadillacfaq.com/faq/answe...ers/index.html
If you do Kooks, the biggest difference is the steering shaft. You have to remove a bolt and swing the shaft to the side, install the header, then rebolt the shaft together ... 1/2 minute tops. DON'T turn the steering wheel while it's disconnected. Not absolutely certain with TPIS, Katech, or the newer brands that have come out recently.
Lastly, the above install procedure omits mention of putting the dip stick tube back in place. I personally just about crapped my pants trying to get it back it (I finally did ... get it in, that is), and others have had their cars towed to a shop to reinstall it when they were unsuccessful, so just FYI.
Having access to a lift is a big plus. You'll do great.
'05 CTS-V, Maggie, Kooks, Hotchkis, Ground Control, Corsa, B&M, DSS/Hendrix, Full 3M Clear Bra, Autovation, V Headrests, CTS Console, STS-V 55w Fogs, Black Vette FRCs, Specter Werkes, Katech LS9 Clutch, SS Brake Lines, Heavymetals U-Turn Fuel Line Eliminator, Momo Combat Evo Shift Knob, Wldwhl Clear Sidemarkers, Linea Corse LC855 Wheels, plus a couple more. Mustang dyno'd at 472 RWHP/411 RWTQ.