Hello andto the forum, we are happy to have you. I am sure I can speak for all of us here when I say…
. We would love to see the bird. Regarding graphics, there are a couple of NOS ones (or at least there were) for sale on here. I know @hemi71x had some. If you do not want to go that route though, I would say Performance Car Graphics would be “the best” option with Phoenix Graphics being a close 2nd. Just my opinion of course. Best of luck with the restoration, and with which graphics you choose.
Performance Car Graphics PCG performancecargraphics.com
Phoenix Graphix 1970 Plymouth Superbird Decal Kit
1 of 2 with matching vin numbers.