Cracking Power Steering Boxes

[gofast321]

Hi All. I have a 1988 Suburban that I did a L83 GEN V swap. I finally got it running and moving but I'm having an issue with power steering boxes. I keep blowing the front of the power steering boxes out. I'm using an AGR power steering pump in the swap with a stock square body GM power steering gear box. This is the second one that has exploded on me. Any suggestions on what I might be doing wrong? I find it hard to believe that the pump would make enough pressure to do this type of damage. If the pressure was too high I would expect a line or fitting to burst first. Any suggestions?

I have ticket opened with AGR but thought I might get the opinion of some of the folks here first.

Thanks for the help.