okay,I will make everything easier for all ,I am just gonna swap all that crap for better might as well go the extra mile and last longer in the long run okay here it gose,I got about 250 or 310 in reserve for emergencie`s this is what i need please be kind on my soul. The parts you will need: 88-91 Si intake manifold and gasket (Get all the sensors) Intake manifold brace (The DX brace is different) ECU: 88-91 Si or 88-89 teg Injector Resistor Box 88-91 Si or 88-89 teg 88-91 Si distributor Extra wire or a wiring harness from a Si Some assorted connectors can be custom made or sourced from the Si wiring harness Throttle body and gasket Injector o-rings and seals There is a hose that is different between the DX and Si on the distributor side of the intake manifold. It has a 180 degree bend [Looks like a U] and it goes from the intake to the head and will be needed. The stock DX airbox will not fit properly. Either get a Si box, an aftermarket cone style intake or plan on some ghetto fabrication If anyone has all this please tell me how much for it all really need this to get my car up and running.