Tenaji

Hi all, I've tried googling around and haven't come to much of a conclusion. Could anyone tell me what's the difference between the BN Sports Type 3 and Type 4 kits? Type 3: Type 4: So far all I can spot is different vent sizing in the front bar and different rear bar angling as well as a tow slot. I think I just answered my own question before finishing up this post but if anyone else has anything to add, that'd be great.