I do most of the work on my own.
My point regarding parts is one of awareness. Not all crossfire parts are interchangeable.
there are parts that are dedicated to the SRT only.

My experience has been that RockAuto doesn’t always list the correct parts for the SRT. I’ve purchased several items, listed for the SRT, (in the SRT section of the drop down menu) only to find out that they’re for the NA. In addition to that, when you identify that the parts are incorrect, there is almost no recourse with respect to support or returns. That has been my experience.

The parts were fine but incorrect.

Experience is what I got when I didn’t get what I wanted.