Its come to my attention the the ports look different according to the gasket. I also started flipping out thinking the bolt patterns were different, but then I noticed on of them was flipped backwards. Look at the pics, and see the different ports. Anyone have an idea on what I should do? I was going to use my old S4 intake, but I dont want to create any turbulance where the intake meets the block.

86-88 gasket


89-91 gasket


The ports look shorter and fatter in the second pic. Maybe its just the lighting. Man, the differences looked more drastic last night.

 

Well, I can tell you it will work if you put the series 4 intake on the series 5 block (if you have upper/lower matching), as someone did it to the engine I bought and it ran fine, just get the series 4 gaskets and you should be all set.