Just don't be afraid of aftermarket parts. Year One is kinda expensive on their parts, but they will stand by them 100%. Hopefully someone will have a NOS set for you.
There's a whole nother topic on X vs H pipe, but in short from what I've read, the X pipe makes a couple more horsepower and is louder than the H pipe. But the H pipe is factory on the 440 and Hemi. It comes down to what you prefer, A few horsepower or a nice balanced sound. Uh oh! I might have...
Go with 2.5" head pipes off the exhaust manifolds for about 3 feet then going to 2" after. You want to get as much flow as possible. Remember the 1st generation Neons had 2.5" exhaust!
Almost impossible. Good luck. By the way, I bought a set from Year One when they first released them. I don't know about now, but the ones I have look and fit exactly like my factory ones!
The good thing is I think all the early Mopar cruise controls were pretty much the same as it was an bolt on option. So that might help with finding parts.
Factory AC equiped cars did have a higher idle setting. Like an additional 100 rpm or so. Ricks72Chlgr440, what is your current rpm in Park at idle? 950rpm or less I would think is definitely acceptable.
Do you want to keep your stock exhaust manifolds? I ask because they are going to be a cork in the flow. TTI is the best. If course they aren't cheap but pretty much certain to fit.
Well, since it's a special order car "Y05", and if the salesman was willing to check A31 for a 318, it looks to be possible. They even ordered a Rallye hood with hood pins and a "Go Wing", plus chrome exhaust tips. It would be an interesting Barracuda convertible to see! Also, it would be...
I, too, would be very surprised if a 70-73 26" radiator fan shroud for an E-Body wouldn't fit a 74. Mopar made new part number radiators for every year and combination and I never understood why.
It's your car, you can do it how you want. I've never investigated it, but with all the big hood decals on the newer Challengers and Jeep Trailhawks, seems to me there's a lot of places that could install the hood decal for a good price.
The dimensions are there in the drawing Moparleo supplied. Section A-A has the pin stripe as .20" wide and the gap at .25" wide. The width of the main stripe is encoded in detail Z - 134.00-128.85=5.15". They're not easy drawings to interpret until you've stared at them long enough.
Ricks72Chlgr440 is correct, you're in this deep, check everything out and machine/replace as necessary. May as well do it right and it will last forever. 👍