These motors are marine motors. While I can not attest to the quality of the ebay version I can give you a bit of insight into the wildhorses one. The ebay one does look "skinnier"
I am 6'5" and the whole wiper linkage I had going on was a distraction that I really did not want right at eye level. I always felt like there was a locomotive in front of me. That is the reason why I switched.
These types of motors basically power one wiper, so you will need two of them. The wildhorses version is produced by AFI Marine. Its the heavy duty version. The benefit of getting them from WH is that they are an exact fit to our rigs. Too many options when ordering from AFI. The issue with having two individual motors is that they will not be synchronized 90% of the time. That in itself is quite annoying. Wildhorses also sells a switch that synchronizes the motors, provides 2 speeds as well as various intermittent options which is quite nice. The switch also takes care of the washer fluid. The entire switch fits in the same hole as ARB switches.
The wiper power is vastly superior to the standard motor setup I had before. The high speed is also faster. Ive had the opportunity to drive through several storms (4" rain dumped over the course of a couple hours) and this wiper setup performs quite nicely!! While the entire setup is not cheap, I think its money well spent.
I just took pics. Sorry they are of poor quality. Cellphone in a dark garage.