Budget is the key. Looking to spend $800-1000 total so Tremec is out. What components?. Trans, bell housing, clutch, shifter, pedals, z bar, crossmember, driveshaft. Anything else. Car is a 350/350 car currently.
1969 Camaro- My Fav.
2001 Silverado- Tow mule/DD
1986 Toyota- Off road truck
If you find a trans that has a drivers side speedo (a non-camaro trans) your existing speedo cable will fit.
Make sure the trans is a coarse spline input shaft (10 spline)
I did a PG to muncie swap years ago for a grand, found the trans on ebay for around $400, new hurst shifter and install kit ate up $250, found a used bell on ebay cheap, used flywheel cheap, new pedals, linkage, and clutch.