What were the exhaust manifolds for 1970 383...

Did all 1970 383s with 4 Barrel come with the same type of exhaust manifolds? I'm meaning if they were all the arch style manifolds.

I'm way out on a limb & just guessing but I would think the HP's would have the good arched ones (#'s are in the archives or at www.bigblockdart.com) & the regular 383's would have the logs.

1970 B & E-body 383
single exhaust 290hp 383 2-bbl ("L"-code E61 "blue" engine) - log manifold on RH & dual exhaust manifold on LH
dual exhaust 330hp 383 4-bbl ("N"-code E63 "blue" engine) - dual exhaust manifolds (arched "HP" style)
dual exhaust 335hp 383HP 4-bbl ("N"-code E63 "orange" engine) - dual exhaust manifolds (arched "HP" style)

Thanks

In other words the passenger side manifold is the difference and the important one to find

Casting numbers are 2951865 & 2899879 for the HP manifolds.

Yeap! Got a pair magnafuxed and ready to go.