hi peeps just wanting ur opinions on wats needed if i use a rb26 top end with my rb20 bottom end but instead of twin turbo im goin a gt45. what else would i have to change? im already planning to change: injectors to 555cc, bosch 040 fuel pump, z32 afm, gtr ecu is suplied with top end (might upgrade to Apexi PFC), and greddy twin plate clutch wat else would u recomend??? thanks for ur help