broke something

isnt that the linkage for the parking brake?

Spring for the parking brake. It goes from the parking brake bracket to a hole at the end of the passenger's side subframe.

Here is how mine is mounted on my 65 (with a 66 parking brake cable):





I have subframe connectors, but your's should mount similarly. I install my spring on the underside of the parking brake bracket and the cable assembly bracket is on top. It gives me more clearance away from the driveshaft. Not sure which way is factory, but I think that either way works good if there is adequate clearance with the exhaust. Swapping them around like mine "might" give you more room with that T5 tranny conversion.