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    Roush What mods to see 450 rwhp?

    I recently purchased an 05 s281sc and love the looks but felt I wanted more power. So I purchased a 550 hp upgrade from JDM and overall I'm pleased with it. The car dynoed at 460 rwhp. The tune from JDM is a good consevatve tune. If I want to make more power I could get a custom tune but Im...
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    Roush new to the forum

    I'm new to this forum and wanted to say whatsup to everybody. I got an 05 saleen sc and a 1998 gt that I use as a daily driver. I recently blew a head gasket on the 98 and I'm trying to decide whether I should go ahead and throw a 5.0 forged short block in there since the motor has over 100k...