Just an Internet photo of an installed E-Body sway bar. The plates for the sway bar are the same for the 8-3/4" rear differential.
If you want to talk "points" for non-OEM, add the chrome diff cover and all of the incorrect suspension component colors.
For the original OP's question...
Correct “Street Hemi Orange” engine paint for 1970 is: Ditzler EQE-60626 w/ 25% Ditzler DX-265 flattening agent
and Uncle Tony's Garage has some very good guidance on prep and paint of the engine block.
This thread discusses the paint and application. Example...
@Challenger RTA
The 1971 340 engines (GW340 prefix at driver side front cylinder head deck) built at the Windsor Engine Plant in Canada were painted Street Hemi Orange.
340 engine assembly shifted during the 1971 model year to the Mound Rd Engine Plant in Detroit.
All Mound Road 340's (GM340...
I had the same thing. The TTI connections are extremely tight. I found that carefully tweaking them with an exhaust pipe expander made for an easier installation.
AutoZone’s free loan-a-tool program has a very nice kit to expand all sizes of pipe.
Once together, just use the stainless band...
That would be a whole other discussion on anti-slosh, tank venting, ECS, etc.
The picture I posted is the new tube.
The OP asked, “Is this dent in the fuel filler tube supposed to be there?”
The answer is, “Yes.”
That filler tube looks nothing like the 1970 fuel filler tubes. I am not even sure that fits an E-body since it is so radically different.
Below is the correct Barracuda/Cuda filler tube that is sold for all 70-74 Plymouth E-Bodies.
Occam's Razor
What are the odds that a "dent" that is perfectly symmetrical both vertically and horizontally would occur on the fuel filler tube in the exact same location on tens of thousands of Barracuda/Cudas?
And, that the "dent" would occur in a very protected area with factory...