1971 318-340 water pump

So you know the history of the car so its not mine. unless it was not the original engine. thanks
Yes I know the history from when I purchased it and it sat at my buddies body shop for about a year because he got it from an auction. I believe he got it in73 or 74 minor damage and I think I bought it from him in 75, maybe 74? It was 100% stock and no mechanical parts looked touched to me. But I didn't double check everything on it and never replaced anything I remember but I could have replaced the trans as I was hard on them but I really don't remember.