Below is some info I combined from the other thread and a comparison of the timing for both years '88 and '08.
After more research, I now know that I have the non-CA, i.e. US version of the '88-04 CDI. The relevant part numbers are: 21119-1229 (US) and 21119-1233 (CA). Per the attached picture from the '88 Service Manual, it looks like the timing can vary roughly 5 degrees thru-out the power curve!
'88-94 - Timing specs: 10 degrees BTDC @ 1300 RPM / 42 degrees BTDC @ 4500 RPM
'08-09 - Timing specs: 10 degrees BTDC @ 1300 RPM / 35 degrees BTDC @ 4000 RPM