Thanks for the fast responses! You're the guys I hoped to hear from about this issue.

Looks like the Roadster chassis is very different from the '33 in this area, so the issue doesn't show up there. I'm using QA1 shocks (from a non-supporting vendor), but they don't appear to be any bigger than the stock Koni's? However, everything is very close together. I've got less than 1/4" clearance between the spring and E-Brake arms even ignoring the protruding stud. It's a good thing that parts don't move around very much in the IRS. (Pictures taken at full droop, but it doesn't look like it will be any different at normal ride height.)

Sorry for the poor photos. This is my first attempt to posting pictures on the forum and I'm just learning how to use the editing tools.

Keith

Resized E-Brake Interference.jpg Rear View IRS Brakes 2.jpg