he said he didnt have the LS anymore, dont get b16, they arent torquey enough for a 1990 Integra. u wont get anywhere fast. get a 92-93 GSR 1.7 ( HARD to find!!) and only buy it if u can get a good deal ( unlikely tho). other option is get a B18c1 ( GSR motor) , that will easily spank his civic, or get a new B18a1, and get nos or boost.