Help me decide on this '67 Dart GT

I was told the steering gear must be used completely from either the old or new, but not mixed.

This is absolutely not true, and my own car is a good example.

The difference is in 73, in the 67 only I member, and whether or not you have a newer "big spline" pitman shaft.

So you must match the steering box, the pitman arm, idler arm, and steering link.

WITH ONE CATCH

If you still have the original 67 idler arm / K member, IT HAS a unique, one year only mount. This means you can NOT use the later "big spline" stuff unless you

change to a 68--72, or a 73-76 K member

or re-work (fab and weld) the idler bracket to take the 68 /later idler arm

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Depending on the problem the steering issue can be fixed I'm sure. Used / usable steering boxes are not expensive

With no photos to judge "rust" condition and body condition in general, this could be a good buy, a fair buy, or over priced.

"How to identify" the unique, 67 only idler arm........it has a stud mount like the tie rod ends. The 68 / later have a "through bolt" meaning a bolt and a head clear through the idler and brackets, and a nut on the end.