170 stroker turbo build

What pistons are available to use with the 198 crank and the stock 170 rods or are they a custom build? I plan on collecting the parts needed and building on paper what I need to do before actually starting the build.

Building on paper first is an exelant idea. As for pistons you'll need to do some research. I haven't done it myself . There was some discussion over at slant six dot org do a search over there.