Hello from ia

Welcome! Nice baseline!
Now for your question. If it was me I would one of these things.
Keep the 340, build it up and run it!
Or keep the 340 by storing it and find a 89-92 LA roller or Magnum 5.9 & build it up nicely as a daily. Then slowly building up the 340.
- 340's are gold nowadays. 5.2 & 5.9 Magnums are still somewhat plentiful and have a good deal of aftermarket support.
Or keep the 340 and if goes your fancy get a Gen 3 Hemi and do a swap, not the easiest or the prettiest but can be done if you really, really want a modern powerplant. (some members here have done it, look 'em up), not my cup of tea but I've seen some done pretty nicely.
Now this is a "if this was me" scenario, but you'll notice a theme here of 'keep the 340' :thumbsup:.