Right. Time for an update in this.
Short answer definitely not.
Long answer yes but with plenty of dremelling and modification.
I took the gearbox off both cars and side by side they're nearly identical.... But
The top mount to chassis is wider than the ansmann
The bottom mount to t-piece is also wider than the ansmann. With modification (eg redrilling mount holes or grinding the lrp gearbox housing down) it would go. As far as my original question the diff. Inconclusive at the moment as the lrp comes with telescopic driveshafts rather than conventional cvd's I will try and see if this actually fits. But I'm unsure at the moment.