My 2 cents...
If it is a street car / daily driver etc definitely go 4 or 5 speed depending on your budget. Honestly, by time you buy the big block auto, rebuild it, modify or replace your shifter and buy a performance torque converter you are probably not too far off the cost of going 4 speed if you buy the bits and pieces carefully. Plus you cant put a price tag on the fun of a stick car!
If it is a race car or a street car that is going to see serious strip time and slicks go automatic, otherwise expect to break lots of parts due to the shock loading with a manual trans.
:burnout: