97 to 99 or 2000 3.8 engine swap

[97firebird3.8]

Okay quick question, my wife's 97 needs a new engine and I have a line a on good 99 what are the differences between them and what would I need to swap off of her engine? I just mainly need the block and heads. The 99 I am looking at looks exactly like her 97 engine? I think it might be a 98 since it still has the over the plugs exhaust manifolds, even though they claim it is a 99?

[teal99camaro]

they changed the manifolds in 2000

[Nachius]

You will need the upper intake and throttle body off of hers, everything else should be the same.

99+ upper intakes and throttle bodies are straight instead of angled like pre 99s and the throttle is electronic instead of cable like in 97.

[PiLOTLiTE]

If you're going to go the 2000+ engine route like I did, make sure you get the 2000+ AC lines for proper clearance around the tubular manifolds.

[Turbo V6 Camaro]

they also changed the fuel injectors so you will have to use the one for the 1997 and the 1997 harness