Panzer's been out of Biz for Years!
I know and do Biz with Buzz Richardson in Canyon City,Co who used to build there Pan style Motors! He has #1 Panzer Bike in his shop...Good Old school motor builder!
If you have never built or owned a Harley why are you trying to put to things together that would require a lot of custom work
Just buy a complete bike that runs ride it, break it, fix it! The things your asking can be done, but not cheaply! You would have to be a Master Fabricator to make Mounts for the engine, frame, tranny, ...so just stop yanking your crank ! You wont find a 'cheap' -'panhead' those 2 words are not found in the same sentence that often!
I have 8 Old School Panhead bikes....all of them cost me under $1000 when I bought them.....and all are worth between $20-45 each and there NOT 4 SALE! Except for # 8 a 1959 FLH that I ride everyday
and have owned for 41 years!
Remember the most Important thing there is about owning, and riding an Old Knuck, Pan or Shovelhead.....you better know how to work on them yourself....Harley Dealers wont touch them....ThankGod 4 That!