Cpp or porterbuilt???

[BenC/10]

Hey guys need some advice, i'm trying to decide if i need to get another driveshaft crossmember or not? My suspension setup is currently 3in drop in the front and 5" drop in the back, both with coils and a two piece driveshaft. i asked cpp about the differential angle changes with running said drop, and they recommended me to get their "drop trailing arm crossmember" which i dont mind upgrading to, ive also heard awesome things about the quality of the porterbuilt pieces as well, but idk if his crossmember is made for static drops? Or if he offers one for a two piece driveshaft? Any advice is helpful! Thanks