Manual trans swaps: Cheapest vs Easiest vs Best Performing vs Best Driving Experience

When I got my car 6 years ago the interior was out and had a police 318 in it with a 727 transmission and 7 1/4 rear end...
I never even found out if the 727 even worked... I just about gave it away for $50.. I got lucky and found a guy selling a 4-speed a833. It came with bellhousing z-bar and shifter for $800.. course I had to find a floor hump petals a dust cover and a few other little things... also I did put 8 1/4 with 3:55 gears..
Everything on my car has changed since except for the four speed...
If your planning on building a muscle car then plan on putting a 4-speed in it and plan on enjoying it to no end... My-2....