Sour Skittle solely did a hybrid conversion turbo setup which he dubbed the C39, and basically no other parts of his own.
He had nothing to do with DHM except for the time that his kits were sold, and tuned, through DHM, which supposedly had a very negative effect on DHM's bottom line due to some bad seal defects in the C39s, which DHM had to make good on, on their own dime, contributing to their bankruptcy.