Heater core diffs

Yep from what I've read a lot of heater cores dont fit properly. Really shouldn't be too difficult to fix as it's just copper plumbing.
Inspector71, nice work!
If I didn't have stumble bum hands, ha ha. Thanks for the compliment. I'm a first timer at all of this. I miss the days when Darts, Dusters, Barracudas were commonly seen on the streets, not barn finds