Hi again! We went with R154. You are correct it is a hardtop. My wheels are MB racing and here are our mods: 3 angle valve job ported, PTE 550's, Lex afm, Cooleeze turbo pipe, Walbro, Aem fpr, ss fuel lines, full 3" exhaust, hi/flo cat, Aem wideband, Hard pipes, Apexi avcr, Apexi neo, Obx...