The coil I think is still ok as it is supplying a strong spark.
I did a search on ebay for all the compatible ezl modules, there are about 8 according to MBDOC.

They are all around the $700-900 range.

I would install a megasquirt rather then spend that money on a second hand ezl.

Only thing is the harmonic and pulley are different to what is on my 300TE and they appear to be one unit, that is going to make it a bit harder to mount a trigger wheel. I'll have to weld it on.
See these pics.