Haven't had any issues with those unstable squirrels lately?My 86 SS came with (well at least when I got it so who knows) locking non channel tops. It is a Texas built car. It was sold in NY. It currently has a non locking black plastic channel top on the passenger side, pirated off an 85 Grand Prix at a pick n pull due to an emotionally unstable squirrel committing suicide by throwing himself through my original top.