long stackers better bottom end power.Good for off road crawling type sh!t.Short stackers better top end.Good for getting more out of your higher gears.Highway type sh!t.
Call LC,tell them what you have & or will have!! I have their Pro Street engine & run all that they recommended, runs fast & strong!!
A typical 22r aftermarket header of any type will be an improvement over the stock manifold LC ...very nice built well and proven Pacesetter ...most common affordable Doug thorly... try y dunno if they still make it Obx ..haven't herd much about Trd .....tunable slide stack rare