Haha. Well I run a shop, my lead tech built his G8 and CTS-V and has been pushing me for years to mod my Denalis and suburbans. This is just a perfect reason since I’m that far in. Only an extra 13 hours of labor time. (Which I pay almost nothing for) and then the kit. Which surprisingly with new cam and upgraded head bolts and gaskets was only 250 more than OE parts.