Mike, If I remember right, the first year for "Sure-Grip" was 1958. There was also a disk brake option on Imperials in the mid 50's. Does anyone know if a late 60's 8 3/4 "Sure-Grip" package will fit into a 56 Dodge 8 3/4? Dave Homstad 56 Dodge D500 ------------------------------------------------------------------ At 11:40 AM 2/3/99 -0800, you wrote: >s scott <kneedrager@xxxxxxxxxxx> wrote on Wednesday February 3, 1999 >at 6:24am: > > >>Also I think that "posi" is a GM term and "limited slip" is the Mopar >>term for the same thing, can anyone set me straight on this. > >"Posi", or "Positraction", is specifically a Ch#vy term; other GM >divisions originally used other names. (I believe P#nt@*c used >"Safe-T-Track"; don't remember the others.) GM didn't even have it >first! That honor goes to Packard, who called it "Twin Traction"... > >The MoPar Madison Avenue name for a limited slip differential (correct >technical term regardless of manufacturer) is "Sure-Grip". > >Mike Sealey > >+--------------------------------------------------------------------------+ >| The coolest site for free home pages, email, chat, e-cards, movie info.. | >| http://www.goplay.com - it's time to Go Play! | >+--------------------------------------------------------------------------+ > > Dave |