If I use the Mace COMP Cam with say 1.8 rockers and stock valve springs, I would lose lift this way, but still get good results because of the longer duration right? Reason I'm asking is because I'd like to cam my car using stock springs and timing chain.

It would be I guess. I can understand this. In saying this though, if you have an L67, then I would really only recommend one of our COMP cams as they do work extremely well on an L67 engine. Anything else, and you honestly would be better off putting your money into other upgrades such as an intercooler, etc.