would they free up noticeable power? the trans has 144 thousand miles, texas highway miles by middle aged couple. unsure of vehicle history so im cautious of any powertrain upgrades. i cant seem to find good info in these topics regarding the Series 2 N/A... this other site, 3800pro.com has so little trafic on its forum, it takes weeks for someone to respond to a post. my longtime forum houston-imports.com has crazy traffic. go there. lol.