This is a (2nd gen?) Rainmaker that is outfitted with a PTP vertical adapter kit which allows the user to install standard HP and LP regulators, providing more reliable operation and tuning options. The high pressure feed is now routed via a large stainless line running down the side, replacing the original rubber line that feeds through the lower portion of the body. Rainmakers weren't incredibly succesfull (or reliable), so the prevalence of these conversions is fairly low.
