Carl
Another option worth thinking about is the QED 450 cams. They are a solid profile. I am not sure about piston pockets with these as the ones I fitted a little while ago had forged pistons. I am sure QED will know.
Dont worry about solid lifters being noisy. They are only noisy if the shims are not done properly.
It may be worth changing the oil pump gear to a steel one if this has not already been done.
James
Su77on Se7ens