I have two Dakota performance,turbo port m1000 cylinders,also the matching head,I do not know the specs on these, I have used the on my ovs race gas kit, and they worked great.I did a slight sqeek on one of the pistons, so on of the cylinders need to be reniced.I have one brand new piston,and one good used piston, they are both for the 1000. 350, plus shipping, will ship to us.
