1970 4 speed reverse lock out linkage
70 is the only year that used a lockout key release system in an A-body. 71 & 72 never used it. The bell bracket mostly certainly is correct and is installed through the bushing, the way it should be. Check ebay auction
http://www.ebay.com/itm/140569688689 . I had 2 cars with this lockout setup on and this is what they used from the factory. The frame bracket is on the correct way with the pin sticking out to go in the alignment hole in the frame rail. Not only were the rods discarded and very hard to find, but the cross shaft can be even worse to find. Here are pics of 2 other lock out bell brackets. Number is one is a E and B-body big block one. Number two is an E-body small block.