This is a dumb question but...

Can U install a stoker from the bottom of the car, I.e. not take out the engine?

What kind of specail tools would I need?

 

Well....techinicly you "Could" ,but I can not think of anyone who will recomend it.

You need all the supporting parts and some machine work to make it fit. The pan rails and bottom cylinder walls need cut. Got to have correct pistons. Timing set must come off transmission has to come out.

at some point the ONLY thing left in the car will be the block

 

Umm... why would you want to?? When you stroke a motor you don't just replace the crank you have more corresponding parts that go with it.