[GNXdreamin]

hello, i have a '95 blazer, 4x4, 4.3 vortec, vin W, CPI that i am swapping out. the donor motor is a 4.3 vortec, vin W, CPI out of a '93 blazer. At first glance, everything appeared in order, the only difference i noticed between the two was in the distributor. My motor has side mounted plugs, where as the donor had top mounted. Naturally, i assumed the difference between the two was simply for clearance, as the top mounted will not fit in my engine compartment. Upon arriving home with the donor motor, i find something else. The donor motor has no crank position sensor. Can i just swap out my timing chain covers, and install the crank sensor? or is it a deeper problem than that? Where does the sensor pick up it's signal from? And do i need to switch out the cam and crank sprockets, as well as the chain? Those i believe are different between model years. But as far as the crank goes, I thought they were the same? What do i need to do here? Thanks in advance, ---T.J.