It will be fine. The 0TTP LT header is better designed at this point because they have a true collector funnel installed between the four ports.
But I think the ZZP LT is better in the sense that it has matched the primaries to the firing order of the engine to the collector.
The LSJ firing order is 1, 3, 4, 2. So the exhaust pulses are hitting the collector in a circular pattern which is supposed to decrease turbulance and improve scalavaging as it "spins" or creates a tornado effect into the rest of the exhaust system.