eBay Sportline bars and bushings with Bilstein HD struts on C124

I've read the archives - and am still a little confused. I haven't seen this exact combination addressed in any of the previous threads. Any help and clarification will be much appreciated, (before I spend my money).

There is an eBay "special" for about $600 that includes the Sportline front and rear sway bars, Sportline bushings, and front and rear Bilstein HD struts.

Springs are not part of the deal, (original stock springs are still used), so the body is not lowered. (Not important for me.) The car in question is a M103 300CE.

Does this combination work well together and is it an easy, simple, inexpensive way to obtain better handling without going with the full Sportline conversion? Will handling really be that much better than the stock setup with only a "half-way" Sportline suspension?