I'd say it depends, the good year restomods can go upwards of 70k when properly done, with its eyes closed. Even the off year cars, can fetch 40-60k. Value is in the eye of the beholder ultimately. Cost to build will be how crazy you want to go, and if your handy can be built on a tighter budget.
Whereas a # matching restoration will have a good value for an exceptionally rare car. Most will end up spending more to get the car restored than it may ever be worth, depending on what's missing. To be honest if I was selling a rare rebuild able 70 340 long block I could ask double or triple the normal price because I know I got the # matching crowd over a barrel, where the restomod/performance crowd would tell me to get bent.
Also what you intend to do with the car is important, do you want to drive it regularly, fry the tires around the track, or down the strip. If so the restomod is for you.
Now if you are an investment builder, a mopar history buff, or have an exceedingly rare car, the # matching restoration would be justified.
Ultimately, your money, do you want to have something your scared to drive becuase every part is nearly irreplaceable; or something you will enjoy taking out quasi regularly, have fun with, and be rewarded for your efforts with a big @$$ sh!t eating grin when you mat it, or toss it into a corner, and if something breaks no big deal because it's not made out of unobtainium...
