Take a look at Mitsubishi vans as well for a source. It will have to be from another manual 2.0 as they are a 'narrow' block pattern. 2.6 and the injected 4G64 (2.4L) are wide block. You could use a 2.0 from a FWD Mitsubishi but you will need to retrofit the water pump and ancillaries from your 2.0 to make it work for a RWD truck.