I think that you mean the 2.5 Iron Duke. I dont know of any headers for this engine. I am glad to hear someone other than me runs a 4 cyl in there S truck. Let me know if you find any headers. in the mean time try this web site for more power- www.users.uswest.net/~racing2win/Fiero_Funhtm
92 S-10 Blazer 4x4 Vortec 4.3
85 S-15 Pickup 4x4 2.5 iron duke
I don't know if they make one for the four hamster Chevy
But I ran a Doug Thorley Tri-Y on my four popper Toy,
Awsome increase in low end. Got mine from Downey Toy
maybe you can get a phone # fron them.
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