Cheapest stroker is the Hotrods +4 crank. DO NOT use the "stroker piston". Just get a 10.5:1 (or 12:1 if you want race gas) 85mm JE piston (makes 388cc), get custom base gaskets from Cometic to get the deck height right where it needs to be, and call it a day. That is THE cheapest stroker you can put together.
Most ALL strokers from FST, Powroll, or CWR, is going to run a GOOD 700 just in machine work. AND, if your rod/pin/crank bearings are bad, expect another 200 cronies.
The Hotrods setup is about perfect for what a Warrior's head can flow, IMHO, and anything more is just a waste. It's simple, it's fun, it's proven, it works well, and if your stoke crank is shot, it's the same money for the +4 as it is for the STD stroke crank.
Do that, get it ported, cammed, carbed, intake & exhaust and you'll be VERY happy.