DPFI > MPFI Swap. '91 DX Hatch (Canada). Research says get a PS9 if I can find one because it would be the best for a motor upgrade in the future. These are the part nbrs I have dug up. Â 37820-PS9-A50 Â L4-1590cc Â 1.6L Â D16A6 Â FI Â FED W/AT 37820-PM6-A60 L4-1590cc 1.6L D16A6 FI FED W/AT I already have a full MPFI manifold W/ TB, FI parts and complete engine harness. Plus a dizzy from a '90 CRX Si.