You have to be INSANE to have long-tube headers on a big-block A-body Mopar!

I have a little 367HO under my hood, mostly because the 400 I wanted to put in there, with headers of course, wouldda been too much trouble for me to install. I saw other examples and the large amount of money guys wanted in 1999 to make headers for me , I could not afford. TTI came out with SBM headers about that time so the 360 was a natural. To get BB-type, low-rpm torque, I just boosted the cylinder pressure to 185psi, and never looked back.
My SBM TTIs do not capture the starters, not even the factory ones. It's a lil tricky getting a stocker up there while in the driveway, before my arm strength gives out ,with my fat belly jammed under there. But it does go in.
I don't envy you at all,lol.