Not really.
The pipe length after the initial collector for one bank is already long enough that tuning at that point isn't an issue. Tuning lengths with turbos is really not a big deal anyway. You can just run two smaller diameter pipes right up to the housings. Supposedly for four cylinder engines the dual scroll really helps out because it keeps a jet of exhaust hitting the turbine wheel directly the whole time rather than having negative pulses on the whole stream. Something like that IIRC.

Anyway, the flow in the pipes on our engine is long enough that it is already fully developed, there are 3 cylinders on each bank, so that also may make it irrelevant.
So not a big deal at all, I was just wondering IF it would help, it definitely won't hurt.

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black