If you still decide to go w/ a stroker and wanna stay on the cheap you'll need:
crank (longrod is usually better)
795 series pistons (to accomodate longrods)
cut stock head to accept added stroke
carbs
pipes
reeds
intakes
air filters
billet impeller (since you're in there anyway)
porting
chain/sprockets
gaskets, seals, fluids, assorted rebuild stuff
Basically w/ pipes the best ur gonna do is about $2500-ish. A stroker w/out porting gives you very little added power. Oh and I wouldn't recommend the spacer plate route.