headers
I used the Heddman 1 7/8 headers with a sub flange and the ones for standard heads. They fit great and since they come apart I could remove them without even jacking up the car.
Since they are big and one tube goes outside the frame rail they do cause some clearance issues, but not in the chassis itself. Plus the #1 tube drops straight down and goes under the control arm so road clearance can also be an issue.
I have also had some issues with steering linkage, like the pitman arm nut. But this is slight and I did move my engine back 3/4 of an inch with only changing the #1 tube to clear the steering box.