I've had Blackjacks and I've had Heddmans. I prefer Blackjacks for how they fit, hands-down, I prefer Heddmans for still being available?It was used to assist these damn headers into place this time.
I have had one set of what are probably blackjack or maybe hooker headers for decades. Bought new in '86 or so. They go in as a package with engine and trans easily. They are thin walled and rub the steering shaft unless placed just right and smashed a little. They hug the bellhousing tight. They are a rusty mess but still intact. They are easy to install. They are in the t top car now.
The coupe I bought came with a new set of hedman headers. They are heavier. Flange is thicker. They clear the steering shaft easily. Feel like a better quality part. They are a PAIN IN THE ASS to install. The one tube goes under the front cross member. Even though there is plenty of room for it to follow the other 3 tubes. You can see a clear shot instead of the one goofy under tube. They fit fine once in place. They will not fit as a package. They will not fit after engine is set in place. The engine has to be lifted and about 2 inches forward to fit. They probably need to be laying in the engine bay as the engine is lowered. Once in they look nice except that one tube. Cannot figure out what they are thinking doing it this way.
Ordered a cheap Champion radiator off Ebay. Hopefully it is a quality part. I usually wind up frustrated going the cheap route but cannot justify twice the price We will find out in a few days.