I've contacted them (Gripper) on January 18 2011 by email, got reply on Jan 26 stating 4 weeks delay, wrote again after 4 weeks (no answer), eventually called and got another "4 week delay" answer, wrote again 4 weeks later and still waiting (4 full months elapsed now) for answers about actual availability of 6.5" + 7" diffs for my Escort. Perhaps they don't want new customers? I'm not hurried but Titan Motorsports may get my business, eventually...