So I am looking for pistons for my rebuild. I really don't want to
spend a fortune on the Mahle German units. The Cofabs are half the
price and I have heard that Boston Bob used them for some time.

Is there any horrible reason not to use this product?

Are the rings that it comes with ok or should I use another brand?
Like Grant, or Deves?

I know that these pistons are down 1mm in deck height,  but from what
I understand it will not kill engine performance. It may allow the
engine to run a little cooler from what I am hearing from multiple
sources. I did find someone who makes specialized rods to lengthen it
just enough but they seem sort of experimental to me.

Check this link out:
http://www.shoptalkforums.com/viewtopic.php?t=114667&sid=4bb1fe6ad00d3e70e39767d5aa2c8fa3

set of "2.4L" P&L for the WBX
http://www.shoptalkforums.com/viewtopic.php?t=109925

Any feedback on this would be great.

Thanks.

Robert
NY