I forget but I think 2.5 inch, i'm gonna go look up that thread and post a link.
Edit: http://www.automotiveforums.com/vbul...d.php?t=246579
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1995 3000GT VR-4
Installed: ESP front precat eliminating downpipe, test pipe, RF-1008 K&N, Dejon tool Y pipe, 1G DSM BOV, MSD wires, Guted rear pre cat, ISSPRO EV Marine boost gauge, IPO MBC, EGR blockoffs, Palm m515 dataloger setup, NGK iridium plugs, SPEC stage II clutch 500ft/lb, 5300k HID plug and play setup.
Soon:Topline Engineering ground wires.
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