Small block headers: worst to best fitting. List your experience.

And on that note, my Nickle-plated TTI's fit pretty good.
360/A833, p/s, pdb, 68 Barracuda with a 70 Duster K, and 73 steering, on the 70 biscuits with the spool mount at the back.
Initially, I used the Mopar starter, but when it died, I switched to the Dakota ministarter. and I do not use the 90* filter adapter, opting for a short filter instead.
But ya gotta know, to get the driver's side in the first time, dropped the steering, took the hood off, and hung the engine from a big tree in my backyard. I just pushed the engine over and dropped the header in. I mean there were these two big nuts just starring me in the face........... .
The headers even cleared my Milodon road-race oilpan.
To be truthful tho; I had to raise the engine up a tad so that the steering arms could pass under, and I cut-off the excess stud, leaving just enough to hold the cotter pins, and when I was done, I put a small dent in each tube for good measure.
I remember putting another ding in it somewhere, just to eliminate the possibility of a rattle but I forget where, probably to fit that big starter.......
Further to being truthful; this car was my 4-seasons DD for over 6 years. After the 5th or 6th winter, the driver's side merge had rusted thru on top where the salt collects. A patched it up. A year or two later, the passenger side followed. In about the 10th year, they both let go again, in the same general area. I haven't fixed it yet, cuz she hasn't been a DD since ~2005 or 6, and it's hardly noticeable.
To anyone that wants to know, the steering box is only held on by three bolts, and the pitman arm pops right off with the right pulling-tool. I mean, guys ***** and moan about no room, but the box goes right back in after the header is bolted on.
Oh, and the column only has a few small bolts holding it up.............