I didnt rent it. I just installed the nitrous. 
Alan Jacobs is the one you want to look out for and he lives in CA.
that was last summer (07) that he rented the C. this summer (08) he rented a caddy DTS with like 80k already on it. they didnt have any rwd v8 rentals that day, even with C note bribes lol. the DTS swallowed a 125 shot as well with no issue. went from high 16’s to around a 14 flat.
Brian