i was told by one of the other members that i can strip my 90 gxl motor done to the block and bolt on all the manifolds and acc. from my s4 motor and it will hook up and run fine i want to ask if any one knows if i should remove the water pump and use the s4 or do i just change the manifold and alt im going with out the emiisions and pw steering and do i just simply onbolt the emmisions with block of plates and cap of vacume lines plz let me know it's been a few years since i owned an rx7 and i want to make sure i do this right thx