Mini Starter Help

Hey Guy's,
Well it finally happened! The rebuilt starter that I put in my car in 1981 is starting to act up. So I decided to order a new mini starter. Summit wanted $159.00 + tax ( went to their show room) but I decided to check Rock Auto Parts to see what they wanted for one. I hope that I ordered the right starter. I ordered one for a 2000 Ram 1500 (link below). It said that it was a "OFFSET GEAR REDUCTION; OE Manufacturer: Denso; Power: 1.4KW". The only thing that concerns me is the word "offset". Did I order the right starter? Oh by the way the cost was only $91.00 delivered to my door. Any help to ease my mind would be appreciated. Thanks In Advance.

Link :
http://www.rockauto.com/catalog/moreinfo.php?pk=1414422&cc=1361944