With new mounts, the engine does not shake too much (it is a Diesel, though). Here are the mounts I've used:

Mercedes (from the dealer) never a problem, but they cost $99 each now
Lemfoerder - comparable to the Mercedes (I now have a pair of these in one car)
Meyle - Didn't last long, fewer than 10,000 miles before collapsing
Uro - Only lasted 2,000 miles before they were collapsed.

I typically change the rear transmission mount on every second motor mount change. (I do inspect it everytime)

Back to the original question: should I be using a 123 241 27 13 for the right mount?

__________________
Tom Evans
69 280SE 91K (wish I still had it)
73 220D 98K
78 300D 134K
78 300D 185K
81 300SD 301K (still have)
82 300SD 321K (still have)
84 300D 268K
84 6.2 Diesel GMC Suburban 225K (a whole different story!)