Wrong sway bar

I was checking on the pst front sway bar that was sent along with the other suspension goodies and it might be the wrong one.

When I bring it up to the control lower control arms it nearly touches the spindles, this may be because I was sent the wrong bar or my suspension is cranked up to support the big block.

The instructions seem to indicate this is sway bar 105, not 150 for a bodies but searching their site is hopeless and I've been disconnected from their phone 2x today.

Before I try again tomorrow can anyone tell me what the measurement between the two end link holes should be on an a body sway bar, 71 duster in my case? This one measures at about 42.25" from centre to centre of the holes.

Thanks.