i don't know if anyone's mentioned it yet (i'm not about to go back and read through 4 pages of posts
) but 2000 Cobras were never made. in 99 there was a major recall because the "Cobras" were underpowered. The only 2000 Cobra was the Cobra R where roughly 300 or so were made. Sure it wasn't a V6 with an SVT Cobra insignia? (the domestic equivalent of a 4 door non-vtec Civic with a Type R logo) Either you're mistaken or more likely you're lying.:finger4:
That said an Si would have to run a pretty high boost to keep up with an even mildly supercharged 4 valve 4.6 stang. Forget about keeping those stock internals.. The Si's a respectable car but it would take quit a bit to keep up with an SVT Cobra.