I got a new set of .030 over kb 243 hyperutectic pistons and rings for sale. They fit a 340. Should be around 9 to 9.5 compression. I will go look at the site and give an update. I dont believe they are 10/1 compression. I went with something else. Everything is new and never installed. The pistons were pressed on the rods and I had them removed. They are for full floating rods too. I have the spiral locks for them new also. They were never installed in the engine and the rings are still new in the box and are for these particular pistons. Save yourself 150 bucks and take these off my hands. first 180 bucks plus shipping. Figure around 35 or under for that. I would hope for around 30 but I have to rebox this stuff in another bigger box so it gets there in good shape.
I'm in Alabama zip 35055 pm me or get me @ALANLEMON@msn.com \
Here's a link telling you about them. 9.0-1 to 10.7-1 compression. They cost like 260 plus shipping then the cost of the rings, so someone will get a good deal
http://www.campbellenterprises.com/mopar_kb_pistons.htmHere's some pictures I forgot to add