ok i have a 87 s10 blazer (2wd) with a 2.8. i bought a 3.4 from a 94 camaro. almost everything is swapped over. im looking at the oil filter housing. i have what looks to be a oil pressure switch and another sensor (maybe oil temp?) attached to a fitting that goes into the housing. how do i get this on to the 3.4? i can not figure out where it goes. the area it should go on the 3.4 has a much bigger hole. do i swap oil filter housings?