What Gen III Hemi dipstick tube are you running with a swap pan and headers??

That's 100% a possibility, and will be what I do if we don't fund a better solution.
I will do my best to take a picture of mine this weekend. I am running a 6.1 with TTI headers and a HDK front K frame. I remember I had to solve that problem but I do not remember how I did it? I fear I may have went the flex route, which you already stipulated you did not want.