Does anyone know what years the same model was made? I am thinking it was 1987-1991, but I am not sure. Any info would be great, or a reference. Thank you!

i believe you are correct. for the first few years, the E30 only came in 318i form, or in 323i form as well as the 320i. i am not sure whatelse you need to know, but check out these sites, they may help:

http://bmwe30.net/cgi-bin/datacgi/database.cgi?file=articles&report=articles&Section=07

http://bmwworld.com/models/e30.htm

i also have this book which has all that info, but i have not been able to read it since i have been gone from home for more than a year :(

http://www.amazon.com/exec/obidos/tg/detail/-/0837602203/ref=pd_sim_b_3/002-9961062-2081624?%5Fencoding=UTF8&v=glance