05 to 06 head differences?

I had heard that the MDS lifters were just weaker for higher lift cams, so they might be a breaking point. I figured I'd drop Stu a line and ask about all the valvetrain stuff anyway though since I was hoping to do a cam swap while the engine was on the stand. How much were you wanting for the coils and where are you shipping wise? Also, have you got the wires with them by any chance?