I can't really recall but don't think that I had an issue mounting the solenoid. Most ford style starter relays are pretty consistent and usually use oval shape holes to allow for variance. I just replaced one in the 6 yesterday. I will measure the hole to hole center distance and post this afternoon.
Are you sure you are looking at the correct holes? I vaguely remember there being hole for the shunt nearby. Also can't remember if I had to drill those or not.
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
Last edited by lr172 : 02-28-2020 at 07:45 AM.