You know off hand not sure about weight either. I want to say around 100 lbs or so but really not sure. That is correct on the H22 oil pan especially if you have lowered springs. I really considered the swap in my last EJ, but I sold the EJ and bought a CB7 to put the H22 into. Once I am done I am going to find another EJ and build up my ole motor for turbo. Best bang for buck to me. But you are headed in the right direction by finding out before you do the swap.