Okay so I have a 4.6 liter in my 1998 I seem to blow a head gasket and cracked passenger side head. Now I found a replacement 4.6l complete motor out of a 00 f150 it looks all the same only difference that I've seen the new motor as the coils on the plugs and the eighth number in the VIN number is a W. And the one I have the eight number is a 6..... any info anyone would have , would be helpful being that this is my family only vehicle I need to do the swap quick and without any problems so if anybody has done it already any help would be greatly appreciated