Spoke to Mr. Doug Rippie this morning!
Yes this is a DRM marking, the tag DRM1 was for the first batch of their modifications prior to the Black Widow engines. Likely it was their "emissions legal" package and the power just tested seems to match his expectations. These engines were hand built by Mr. Rippie and ported by Mr. Quinn!
DRM added the "Ten Penny" paint markings to identify the parts and make sure they all came back together to the same car (may have had 5 or 10 apart at the same time). This also means the transmission mentioned above was already in the car at the time it made it to DRM... still not sure how that got there.
It took all I had to keep my s**t together and sound professional when talking to a legend!