Your pretty much discarding the entire bottom end of the motor and running new crank , rods ( your old rods may or may not get reused ) , and pistons . Your block will need to be bored , honed , and ground a little to keep the goodies from hitting it in a couple spots . Lots of attention to detail during assembly .
Then of course its all the labor to remove and reinstall , and its going to need to have the supplemental parts and tuning for it to run right with in the car with the extra cubes and compression .
Most guys without patience , time , or skill just buy one , or have the original one done at a shop .
BTW , I am all for keeping the original numbered block in the car :biggrin:
I am buying my stroker kit, and heads/cam combo from them to do a 383 stroker.
You will hear a lot of different things, but I personally would stick with a 383 over a 396 stroker, a 396 has a lot higher piston speeds and this adds a lot of stress to the rotating assembly, causing you to require a lot more expensive parts. Callies makes a Compstar rotating assembly, with a steel crank, forged Mahle pistons, 6" rods, etc, etc. and it is real reasonably priced. Check with the guys at AI they can set you up.