As many of you know, I have always been a supporter of HRC's products. (Wasn't even paid to say that! and I'm a laywyer) Anyhow, I do think Nemesiz that no this board it's been mentioned quite a few times (more than I care to count) that these aftermarket pistons are .20" over. I've also read on this board repeated times that the consensus is that it's always a good idea to bore on placement of aftermarket pistons such as these.
Furthermore, If I were a retailer, I wouldn't guarantee or support any product or mismatched compnonet that I haven't used or tested myself...that would not only be a customer support nightmare, it would be an unwise business decision.
I can understand that you may have been confused with the circumstances or whatnot, but some of the slandering remarks that have been made in this string are a bit extreme. A simple explanation of the circumstances probably would have been sufficient so someone could have explained to you the information about the pistons. Remember, if it were YOUR company being talked about in that manner, how would you feel?
On a final note, it's one thing to start slamming companies on this board such as Buscher or Diamondstar which have openly criticized our cars by their statements and by virtue of their total lack of product support for the 420a. However, slamming the ONLY company out there with a phone number and an address with an actual website that has pioneered the 1st proven turbosystem for our cars is a bit misplaced, unwise, and wrong in my own mind.
Know who your friends are....
Jason 98' Eagle Talon ESi-T Mitsu Super 16g Turbo(HRC)
and I'm a laywyer) Anyhow, I do think Nemesiz that no this board it's been mentioned quite a few times (more than I care to count) that these aftermarket pistons are .20" over. I've also read on this board repeated times that the consensus is that it's always a good idea to bore on placement of aftermarket pistons such as these. 
