Performer RPM Magnum heads?

If you can find a pre magnum roller LA motor(89-93 I believe)that would be great. They used the LA 308 heads and some came with the roller cam in them. I have 2 of them and 1 came with the roller and 1 did not. You can run the magnum or LA type heads on them.
Everybody keeps repeating about how crack prone the Magnum stock head is.
So far I have never had a cracked Magnum head.(8 sets so far) Now from what I have heard the crack in the Magnum head is a dry crack and can be removed by simply, although not necessarily cheaply, having valve seats put in.
@MOPAROFFICIAL is who did my LA heads for my roller motor. He did a mild not wild(260 @ .500) porting job for me but he went way beyond the normal helping me with my heads. He is located around San Diego CA.

https://www.forabodiesonly.com/mopar/threads/intro-to-a-port-job.405365/