It is? So ZZPs just full of it for the listing on their site? lolLS7 is the stock replacement lifter anyway.
I say ditch the crap T5 and go T56...so much more fun.
Then, pick whatever cam you want, ditch the SC, and go turbo like all the cool kids are doing. LOL
Lighter.
Oil Restricted.
Ask Trannyman about the chains, he's running 130's on a high lift cam with a stock chain/dampner, so does Reptile...
It's all about the idle speed...keep it above or around 850-900, and you should be gravy.