Not all the time but has been happening more frequently lately..

Whenever I down shift in 2nd and come off the clutch slowly.. I get a good vibration that u can feel everywhere in the car..

Any ideas?

 

are you engine braking by slowly releasing the clutch, instead of rev matching? cause if so, that's a huuuuuuuge no no. (i'm sure southern will follow up on this.)
That could be the problem, but i'm not 100% sure, so don't quote me on that

 

why would you let off of the clutch slowly??? don't do that. that's intentional slippeage... you're probably feeling a little clutch "chatter". similar to a brake pulsation, except in your clutch....