I feel your pain. Having the same issues as yourself but on a 95 Vr Corrado. I've also replaced the same parts and no life in the old girl.
Ive had it trailered to E-Tech, who I hope will be able to resolve the issues but so far, no luck. The vag com read a fault on the crank sensor which was swapped out again and still no joy.
I'll be sure to post the outcome, if it starts.