D3 S8 intake manifold replacement

[Snowball]

I own a 07 S8 5.2 V10
Planning to Twin Turbo it therefore i Need to know if i was HYPOTHETICALLY speaking replace my tank looking intake manifold with any aftermarket fabricated two single aluminum replacements or maybe 2 racing RS2 intake manifold assemblies since the stup is almost the same.
Would they fit?
I tried the RS6 unit but its a completely different assembly starting with the grooves of the gasket
Any feedback would be appreciated