Which front sway bar?

The QA1 bar only works with their K Member.

Hotchkis, Addco, Firm Feel and Hellwig make bars. What are we working on?
Okay I went back and read specifications and you're absolutely right for use with their k member. Thanks! I'm working on a 1970 340 swinger with original sway bar. I run 7 in front rims and 225 50 front tires, I would like to stiffen it up.