I had a hesitation under load issue with my 2004 V6 that I initially thought was due to fuel starvation (fortunately it was due to a wonky MAF). Getting ahead of myself, I pulled a fuel pump assembly out of a donor vehicle with the intent of rebuilding it and replacing the electric pump with OEM Denso at the very least. I have taken the fuel pump assembly apart to see where the fuel pump lives and wonder how to remove the OLD electric original fuel pump. It appears to just be a friction fit at first glance, but doesn't want to come out. Am I not seeing a lock fitting or fastener or does it need to be gently hammered out? Would appreciate advice on replacing the original electric pump and top filter housing from anyone that did this before. Thanks!