If you just want it to run, cast will be fine. If you notice, some of the responders stated a GOOD cast piston is fine, not any cast piston.

Here are the things to consider, 1) The $350 cast piston is probably not in the good category, 2) you will not have a good selection of compression heights.

Again, if you just want it to run, this likely does not matter.

If you want a good motor with the possibility to step it up in the future consider getting the Probe SRS pistons. About $625 with rings. My machinist and others (mostly Chevy guys) say it is a decent piston and a good value. This is what you get: 2618 high silicon (low expansion, tighter clearance) forged piston, 1/16, 1/16, 3/16 ring pack, 2.060" compression height, and lighter piston.

For an extra $200 today, you get so much more, and a buch of potential without having to get back into the short block, IMO.