The hedmans in the video are 1 7/8 and have a fixed collector with a flange, IIRC.
I have two sets of Hookers and the Race Super Comps have an adjustable collector. The 1 3/4 set I have (5204's) are fixed collector. I have a set of 1 7/8 Hooker Race SC's coming and I'll know when they get here.
The problem with the tti's is length, too long, not tube diameter. For fit, sans z-bar and I won't go into the rant here, tti's may be fine for street use. For a decent strip car, they won't be anywhere close to my stuff, that's for sure.