hey, i and a couple other guys here are building strokers. there's a lot of options i guess. i'm going w/ 4.2 crank and rods, w/ 4.0 block. i'm putting it in a jeep that had 4.2, the cool thing is if you have a 4.0 already there's not much modification at all.
i have a spare 4.2 crank if you're interested.
here's a cool sight http://www.ajeepthing.com/stroker-motor.html
you will need different injectors, i've heard mustang 5.0 injectors work well. but that site covers a lot of options. good luck and let us know how its going throughout.
i wanna hear about probs you run into so i can avoid them