You wouldn't on a 110. as the rear props longer.
I had no issues on my disco either.Then i got my 90 that was standard originaly!!
After fitting 2 inch lift i got terrible vibrations, contacted local landrover garage who said new prop needed wouldn't bother with wide angle as never had a problem!! even after i had questioned this with them as a few guys from my local club had, had the same problems & told me i would need a wide angle prop for the rear.
Bought a new one from garage on there recommendation & on the understanding if it didn't cure the problem i could return it & get refund!! It never made a difference!! Ordered new one's from a company called
"Driveline" (i have there number if you want it??) Very helpfull bloke on the phone. He asked for the measurements from flange of tansfer box to flange on diff, He done all the working out!!
The price he quoted was the cheapest and he contacted me the following day to take payment & delivery address, as he had made them already, They were with me by 9am the following day & have never had a problem since!! That was 2 years ago & i've not had to replace any uj's!!
The 90 is road legal & does go on pay & play days, Also compete's in events to!!
Hope this helps you sort your problem??