where can I get shift blockoff plates?
 

also is it absolutely necessary to do a drill mod if I change my clutch? I have a feeling my LS7 clutch will go out soon and I didnt do the drill mod last time I changed it. should I do it this time? I dont normally grind when powershifting.

and I need shift block off plates, because I feel im eating the 2nd gear blocker ring, due to not having one, because its hard to get into 2nd and i just rebuilt my trans 3 - 4 months ago.

well answer me