'70 Dart 392 Project; what direction?

Anybody have any preference for the TTI headers vs. the Holley Blackheart headers? Only reason I'd run TTI I think is for the 3" collectors... Really not sure why Holley would run 2.5" on a G3 header like that. Holley midmount accessory package should be here next week. Probably done buying parts for a bit until I get engine assembled and onto the new K member.... maybe :)

Mike