Its all good, for mine i am going to fabricate (under the engine) 180 degree headers, feeding 2 cats (meow) exit the collectors, then cross over either side above the transaxle with the cats, post of those, will both connect together for equalization,then leaving as 4 individual sends, 2 into Gallardo mufflers (when they arrive) exiting the rear with the bypass valves also connected to the extra 2 sends (before the muffler) with a vacuum control on the bypass. and the whole mess into the final collector/combiner out the tail pipe.
maybe i should draw a picture.....