Welcome.. dont think u can just put a poddy on, as the MAF sensor is built into the box, correct me if im wrong? U can go the k&n panel, but u might aswell go the TRD CAI, which is a poddy that is behind ya fog light.. I wouldnt bother with new plugs, will hardly do anything, and u said bigger leads? doesnt it have direct coils to the plugs? sorry i have never checked.. with the rear skirt, check out this thread.. http://au.toyotaownersclub.com/forums/inde...showtopic=19911 , started by TRD sportivo. when i take off and i get wheel spin, its asif the front bounces.. maybe its similar to the 'axlel tramp' you describe.. i get it when i get any wheel spin once again, welcome