New kid from Ory-Gun

Hello all you happy people!

So for starters I don't have my A-body........yet. I'm a small town kid just a year or so away from a respectable programming certification, and I may be at least that far away from my goal if not a little more, but it doesn't hurt to get together with the knowledgable community and get a jump on the know-how and the need-to-know. In the distant future me and my brother have our sights set on getting a 68-69 Charger R/T together, but in the much nearer future my own goal is a 71 or 72 Demon 340. I wanna try for a numbers matching H-code if I can get a good deal on one, but willing to find a separate block and drop it in if need be (I check craigslist and find a lot of slant 6 automatic cars). For now my checklist just sits as follows:

-'71-'72 Demon body (with interior, or at least the dash, in reasonable condition. Love the look of the Demon stock dash, namely that rectangular speedo)

-Preferably original 340 (any used blocks that gather my interest I'll plan on having inspected first)
-8-3/4" sure grip rear end (if not already present)
-4-spd stick (my default option is the A-833 unless if my research down the road turns up a better option
-Upgrade brakes if not already restomodded (can't play around with single brake cylinders)

Anything else in the build I'll leave up in the air until I get closer to my goal