There was at least one "bagged" SRT6 floating around Cali that was done by The Thorbeck Bros, (Suicide Doors). They sold a kit for the Crossfire that looked amazing slammed but I'm not sure how practical or reliable it was.
Here is a thread :
https://www.crossfireforum.org/forum...-nib-best.html
They finally did sell their bagged SRT6.