The replies are priceless on this topic...
Electrical
Stinger 250A High Output Alternator
Big 3 Done
1/0 wiring
Agm d3400 under the hood
Agm d3400 in the trunk
You have the electrical to support a full bridge amp if you want to consider them. Of the 2 you listed, I would go with the D4S amp. But again, I haven't ran either of them nor have I heard either of them and my opinion is based purely on personal preference and amp dyno videos.
Matt