OzyDuster74 chassis connector questions!!

Feel free to chime in with any ideas, love, hate gives me the motivation to get it done.
I always wanted a chrome bumper but something American not Australian as too expensive to restore Australian muscle and limited parts, something to take my two boys in as my ute is only a two seater and they fight over who gets to go in it.
My mates put me on to the Plymouth Duster as at the time still cheap and every part available for when rebuilding. I ended up finding one in August 2021 that had been in storage since 2012. As all others were already built or too expensive.
It was a gamble at 12k (Australian), as paint was all cracked and looked like painted with a brush, interior was killed by UV as California car but looked to be rust free..... time would tell. The rear quarters had some questionable repairs that had me worried. I ran a magnet over the car and didn't look to be full of bog.
She was no beauty queen thats for sure. 74 model with a 318 in a light blue with blue interior.

Ill be asking a lot of questions as not many people to talk about Dusters here, we have our own A body styles here tho.

The plan is to do a Resto/Mod with pro street look to it.
Body-Go back to bare metal and start again, custom colour dont care for the standard colour. Twin scoop and duck tail.
Rear End- Found a 8, 3/4 diff out of a B body cheap will be shortened, trutrak, Calvert Caltracs, Calvert monoleaf and spring offsets,
Box- Rebuilt 904 with all the fruit and custom stall
Engine- Hemi 6.4 swap
Suspension- To be all rebuilt rear, mono leafs and Caltracs with chassis stiffening etc
Wheels- Street Pro 2 Convo Pro Bead lock, Rear 8.5/15, Front 4.5/17
Interior- To be all new and all black for ease of parts (Was lucky as it came with perfect A pillar black plastics, some new rubbers, new black carpet and new rear bench)

This is how my car was
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This is how it is today

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