I'm planning a built 5.2 Magnum for my 56 pickup, and I want a strong torquey engine for a daily driver. These long tube headers look to be the best choice for what I want. Any idea of the price for a set?

Good point. But in the case of my Dakota, its the donor chassis going under my 56 Dodge cab. So far I plan to cut up the Dakota cab, but retain the firewall/floorpan. Then I plan to weld the 56 cab onto the Dakota firewall/floorpan. If I need to create clearance to the firewall I can do that when the 56 cab goes onto the Dakota floorpan. That's assuming something like long tube headers can still fit within the area provided to the 2001 Dakota firewall.

Thanks for those pictures. Are those the long tube headers in a Dakota chassis with the 5.2 Magnum? My goal is a stout, torquey 5.2 Magnum and long tube headers help keep the torque curve lower in the RPM curve.

those are a great looking set of pipes !
a couple of things i do on any set of headers i install, i "stole" from our passed member, Mr. P-body [R.I.P.]
i cut the end pipes from the middle two at the mounting flange, and drill one mounting hole on each flange segment two drill sizes larger.
these simple mods dramatically increase the sealing ability of the flange, no matter how thick the flange is. this is especially true of the 1/4" and 5/16" flanges.
doing this can seal any flange of any header to any head.
i also use studs in the head, along with reduced head size flange nuts.
doing these simple things has worked superbly for me over many years and many header installs.
just my personal experience.
your mileage will vary.

Can you post a pic?