S1 or S2

[mouce]

Here's something a bit different to all the usual S1 vs S2 questions.

I'm looking at fitting an Eaton M90, and NO...I'm not going to swap out my S1 (LN3) engine for the L67 or even a S2.

I've managed to track down a supercharger manifold for a "Buick 3800 V6", only problem is that there's no mention about which series it's for...

Can anyone help me out with this? Is it going to bolt straight on to the S1 motor or is this manifold for a S2?


Click to enlarge.

Thanks in advance.

[immortality]

looks like a ecotec intake manifold (lower) to me. have a look at the cooolant passage locations. it also looks like the standard manifold, not a supercharger lower intake manifold