Well its a series 2 distributor, look at the retard wheel to the right. Someone was smart enough to delete the vacuum retard system and install a light beam pickup . This is like an old ACCEL kit from the 70's but not sure. Way before petronix was around.
I use a series 3 xj6 set up, but there are endless choices today as Jay has said, it all depends on what you want to do.
GTJOEY1314