i hv a question is bout 4G91. now im driving wira 1.3 M and decide to transplant to 4G91M EFI, but i saw all the 4G91 M h/cut is more expansive than A, y ???? so if i buy 4G91 A but i dun use the 4G91A gear box , use my own 1.3M gear box is tat possible ???
how the performance ??? is tat the same ??
how the performance ??? is tat the same ??