My thoughts are,dont waste your time & money on a normally aspirated set-up.
You are not going to get anywhere near the results you want going normally aspirated on your stock longblock,or even a moderatly built longblock. It will not produce the HP & more importantly the torque.You are not changing your pistons,taking your head off,porting, larger valves,etc.

Adding a turbo w/low boost is easily doable,look @ Bouchers the 66 Chevy truck on the BB that the guy did @ home.
https://www.inliners.org/ubbthreads/ubbthreads.php?ubb=showflat&Number=61889&fpart=1

Also, you can add these parts to your longblock & work pretty good.

Don't give up on your dream, live your dream.

I do not like the 2 choices of turbos on your last post.

Dont rush on the purchase of the turbocharger.

The Ebay low $$$ are not known for being the best & not heard of guys running high boost consistanly & last.

MBHD



12 port SDS EFI