Speedriven 585 HP 550 Biturbo PKG
Our 585 HP PKG includes our advanced ECU software upgrade, high-flow performance downpipes, a lightweight, stainless-steel performance cat-back exhaust system, our billet aluminum transmission pan, and an intercooler pump upgrade for $7000 (US).
Here's the ad we ran for this PKG (albeit fitted to an SL550) as far back as the February issue of duPont- only, back then, the billet pan and IC pump were extra. Enjoy!
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Last edited by Speedriven1; Sep 22, 2016 at 05:15 PM. Reason: Wrote "SL55" instead of "SL550". Wrong era. ;)



