What is the main difference? My 94 del sols a3 lost compression. The guy i bought it from had rebuilt it. I am looking at getting a new (guarenteed used) engine. I have found an a2 for 950. I have also found an a3 for 1200. Would it be worth it to just spend the extra money for an a3? If i get an a2 would i have to get obd2 or could i run obd1 with an a2. Any help is appreciated.

 

The engine i found is a b16a 2nd gen. Mods can close thread. Solution is simple. B16a 2nd gen JDM