I have the std driver locations but those should be located center of the track windows. Try the RX/RS forum, quite a few guys on there have them on their RX1s
from non splined end 4.5 inch to center of driver and center of driver to center of driver 8-7/8" thats for rx-1 and I dont know if that will work forothers
I have a few different specs for driver placement, but I need to know which drivers you are running, as distance will change by brand/type. Also I did a set of extros for my dad and he had a oddball track, which I had to re press the drivers for...