Did you have spark before you replaced the dist and ig module?  If so,
check to make sure new parts are wired correctly (double check it).  then
swap ignition module to see if it works.... if not, then it would seem to be
your distributor.

let us know how you make out...

Fwed

With the vehicle cranking, is there a tach signal anywhere?

I believe the blue wire, from the ignition module, carries the rpm signal
to the computer. If there is no signal, the vehicle won't start.

Test that circuit for a dc pulse, if you haven't already. Any codes?