Some weight savings, more room for headers, the ratio is slightly quicker, but mostly improved feel... You now how much better the Firm Feel stage III is than most reman boxes? Well the Borgeson box is about the same kind of improvement over the Firm Feel box.... I still haven't bought one, I've driven enough new GM stuff to know how good the box feels so I'm still planning to do it, just haven't yet... Spring is here & I've already got to many parts to install with not enough time....