I want to install a split manifold but a question in regards to manifold aft. I know powersports but stovbolts are new to me. When replacing headers on bikes I would discuss w/client 4 into 1, or 4into 2into 1,or 4into 2 into 1 into 2. All of these had +/-. My question being split manifold into 2 to 1 exaust. Is this pissing in the wind with this motor. Does the true benefit lay with true dual exaust as unrestricted as possible. If my question is completly out there I'll appologise in advance. I just want to learn from other people's experiences.