i bought a B18b motor for my 90 integra rs but i dont know the exact year of the motor i put in it, all i know is that its not the same as the stock one i pulled out(b18A1) it says B18b 7101066 on the block so if you can use that to find the exact year of this motor that would be great thx!all the block says is B18B i dont know if its a B18B1 or not