Weren't they a bit pricey at the time? 375 hp for what was later the same money as a Hellcat? I could be way off, I can't recall.
SRT 6.1L had 425 hp. At that time one of the fastest Mopar's. Ran the 1/4 in 13.1 ET.
Hellcat 6.2L Supercharged production didn't start until 2015.