I believe you're on the right track with having to disconnect the plug and run the wires through and reinstall the plug. PITA, but the factory manual shows dashed lines between the wires and plug.
The package tray can actually be put in anytime before the rear seat back, but before the rear inner window trim might help position the trim. Hard headliner would have been easier before the windshield, but should slide in with the door and quarter windows down.
Unless I missed something, I thought it is a 74 Barracuda and it would have the ECS tank. The supply tube is 5/16" ID and the return line is 14" ID. Should work great with a Holley electric pump and the regulator he is looking at. 🙂
Gran Coupe Plymouth Barracuda and SE Dodge Challenger had very similar options. Cardboard headliner (coupes) with overhead console were similar.
On a side note, I find it interesting that Plymouth made the Gran Coupe it's own body style (BP23 or BP27) while for the Challenger it was an option...
You know they built them that way from the factory in the 70s right? If not, now you learn something. I'm sure Brewer's or Passon has the parts you need to convert if you have an 833 without overdrive.
I vote for the 360 roller motor since neither of your engines is original. And I like your plan. It should work fine. Mopar went to the Magnum engines with roller cams for a reason, they're better! 😁
I should add that my 70 Challenger WSS that has the panel on it, cover the actual sheet metal panel the is painted body color, in my case FY1 Top Banana. All the WSS and SE Challengers have a panel that includes the quarter panel end chrome trim.
As an owner of a 70 Challenger and 72 Barracuda, I have to say the Challenger with its curve in the quarter panel just looks sexier to me! And the longitudinal (or body side moulding) just accents that curve. I actually think my son's 2015 Scat Pack as the better rear stripe.
1/2" sounds about right! Hopefully you packed the lower control arm sockets with long fiber grease and the rear sockets in the frame once the clips are installed. Then the boots, I pack grease in there too! Center drill in the ends are for manufacturing purposes.
If pressed, I'd go with a longitudinal stripe because it really accents the ridge on the Challenger and how it sweeps up on the rear quarters. But certain colors look really good with the "rump" stripe.
Instead of taking the door glass out, I'd spray the glass with WD40 and just roll them down when painting! Then clean them up with Windex. Like @pschlosser said, too many cuts and scraps to R&R the window glass if you don't have too! Heck, don't put anything on the glass, roll them down, paint...
175 ft-lbs for the arm the gear nut. Every pitman arm I've ever installed had a master spline to prevent any tooth misalignment, but who knows what kind of Chinese crap is out there these days!
Welcome to FEBO from the desert! Hemi blocks are definitely taller than a 340 and used different parts than the small block shackers and a different base than the other big blocks (2 four barrels). Can't wait to see some pictures!
After checking all the above, and it's OK, make sure you take your car to a place that's smart enough to set the ride height before attempting an alignment! Also, you want to use specifications from later B or R Body that has radial tires.