Generation III External Engine - 98-99 exhaust manifolds vs - 02'ish manifolds - size difference?

I have a 2002 Camaro that I purchased some turbo plumbing for. The passenger side of the plumbing connects to "a factory LS1 fbody exhaust manifold". I no longer have my factory manifolds and will have to buy one for the passenger side. Before I do, I wanted to know if the overall geometry of the manifold changed over the years because if so, it might affect what I need for this plumbing. I've seen pictures of the 2 manifolds side by side, and there are slight shape differences, but I couldn't tell if the flange would be in a different spot between the two types. Would you be able to pop a 98 manifold in place of a 2002 and connect it to the same factory Y pipe with no fitment issues?

Thanks!

i could really use this info too!!! anyone care to help out. EVO462 did you get any more info on this you could post?

the pass side is definitely different between 99 and 01+. not sure of 00. i replaced my manifolds with ones off an 01 car and had to have the y altered on the pass side in order for it to work. i believe the newer manifold exits farther down than the older one, but don't quote me on that.

i believe their is a slight difference between the two stock manifolds the 98-00 have egr provisions on the passenger side 01-02 have no egr

98-99 manifolds are the same and the 00-02 are almost the same. The 98-99 use different cats and Y-pipe than the 00-02. Either will bolt up the the motor.
The simple answer to your question is No.

Wasn't some years stainless tubing and other cast?

Wasn't some years stainless tubing and other cast?

Yes 98 & 99 were tubing and the others were cast.

i believe their is a slight difference between the two stock manifolds the 98-00 have egr provisions on the passenger side 01-02 have no egr

The 01-02 Manifolds still have the bosses for the EGR, they are just not drilled/machined to bolt up the EGR pieces to.

Thanks LS, I knew there was something about them.

I think advantage to 98/99 manifolds for being a bit lighter in weight and perhaps the internals being smoother.