KB 191 .040 pistons for sale or TRADE

I have a set of 8, new, in the box, with pins and retainers, Keith Black 191 pistons that are .040 for a 360. I am looking to get $150 plus shipping, or I will trade a set of .020,.030, or .040 kb 107's for them. They are located in East Palestine, OH 44413. I was going to have the dome cut down to a more streetable custom level and still have the quench, but I decided a set of 107's would be fine for my application. Thanks!
Dustin