Full transparency: not a big Mopar fan, but there are some eras within that are just plain cool, and this is one of them.

Seems like what you have done is self-explanatory, but, did you do anything else to the clip to tuck it in so well?

Is that the 'kit' drop on the upper A-Arms?

You have the stance on this absolutely correct, which is the biggest miss of most builds. The MPC body was very well done, one of the few to get the wheelwells right and I bet capture at least a little of Ma Mopar's customizing of the stock proportions.