That will interesting if you can find out any info based on the casting numbers.
That always sucks. I must have at least 3 aluminum LA ones on the shelf that failed in one way or another. I returned at least two A1 Cardone rebuilds one year. Well not quite, one never made off the parts store counter. LOL. Currently using Edelbrock's - nicely made, but required a little grinding to because of contact interference. I got so leary of rebuilt water pumps I was looking at sending my jeep'