Outer shock tower / coil spring cover correct finish and bolt orientation?

[BeaterGT500]

So after determining that my two sets of new aftermarket parts were ill-fitting garbage, I scored an original set of outer shock towers (aka coil spring covers) with rubber stoppers for a mere $25.  Score. They are rust free, and fit perfectly.  Just need to blast them clean and refinish.
So... should they be semi gloss black, natural metal, or what?  Second question, seems like all the Metuchen built '67 cars have the nuts on the inside of the engine compartment.  What about the San Jose cars?  Looks cleaner with the bolt heads on the inside, but what's correct?

[J_Speegle]

Semi-gloss black for 67 all plants

The retaining bolts on a San Jose built Mustang are installed from the engine compartment side putting the nuts in the front wheel wells

Dearborn and NJ are typically installed the reverse during 67 production 67

[Bob Gaines]

Semi-gloss black for 67 all plants

The retaining bolts on a San Jose built Mustang are installed from the engine compartment side putting the nuts in the front wheel wells

Dearborn and NJ are typically installed the reverse during 67 production 67

To add - the nuts and bolts are Phosphate and Oil.