Clifford Performance

In general headers are one of the better products. I have a set bought used, that has the collector welded on somewhat crooked. But I had to modify the headers, anyway for a 170, so not a big deal. I would contact Larry, and make sure he has them ready to ship, before paying for them.
Then there is also AussieSpeed. I have a set of their "long tubes" but they hang pretty low on a 170. Don't know how they fit on a 225. All my experience is with a 64-66 "A" body.