On the 97's you have to use the L36 MAP sensor. This is because the PCM cannot be flashed over to use GTP files, because of the 4T60-E tranny. Without flashing over to the GTP files, your PCM cannot control the L67 MAP or the Boost Bypass Valve.
The L36 MAP has been fine up to this point for me.
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'97 SE with alot of mods