put super comps in my truck last spring; (318/727) had to bend my trans dipstick tube on that one too; never had to with the old "alum a coats" we put in my brother's Ramcharger though.
I liked those headers they held up quite well; but I like the price I got this set of Hooker ones too. Considering that I "made do" and yes they ARE made for the truck chassis; not some others that were "modified" to fit. Evan came with the lil "instruction sheet" that said that bending of the dipstick tube may be necessary.