Yea I was never super happy with the fiberglass fender i made last year. They looked good from far and did the job, however, i think i can get a better result from steel. They will be much more sturdy as well. I may make a mold of them after if they turn out nice, and if i have time. That way I can make some fiberglass fenders as well.
I did the obd1 conversion by using an m50 obd1 harness with all obd1 sensors. For my application, this was the quickest/easiest way to go. It is also a much simpler system with less crap to deal with in the engine bay.