Spoon stuff is overpriced IMO. I would drop some JE pistons in there with a compression ratio no larger than 12:1. That is pretty much the threshold for pump gas with good tuning. You will need a standalone ECU to handle the fueling along with an upgraded fuel system.
www.nolimitmotorsport.com has some JE pistons with free shipping. I have done business with them and they are very reasonable and they actually called me. :shocked: