I have the Hookers. They are an excellent fit.
NO figment issues. NO hammer needed.
They are the "Super Comp" line, not the regular Comp line that need a hammer. Unless you run a scattershed on your 4 spd manual trans. TTI even has a figment issue with the scattersheild. TTI suggests cutting the scattersheild.
The tubes are 1-3/4. Not 1-5/8. These headers are designed for a power house engine. With that said, there will be a slight reduction in low end torque next to the other two headers. Doug's being a 1-5/8 tube start to finish and the TTI's stepping up from 1-5/8 to a 1-3/4 tube after a few inches.
I do not know how coats Hooker Headers. Should there be a problem, blame the coater. The coatings are rated to 1600*'s except there "Dark side" coat which is 1700*'s.
I just received my second set from Summit racing for $475, painted, not coated for my '79 Dodge Magnum. Fitment was perfect with the 727.
No hammer needed!
The only thing I do not like is how close the tunes are to the oil filter. A remote filter relocation set up will be used for easier oil changes and keeping the header clean of oil spillage during changes. Also as not to bake the oil filter while running. Nonsense of baking the oil filter and heating up the oil within.
I'll try and post a picture with my I-phone.
Considering the build of "MY engine" I am sooooo not worried about the small and minor loss of torque at low RPM. The cam size alone, while not large, basically isn't making power there. Along with the single plane, 750 carb, 4.10 gears etc..... You get the idea right?
