The Sprint was a special edition, available in both 135 and 160 versions.
The difference between a Sprint 160 and a normal 160 is the spec (they both have the same VVC engine).
The Sprint has bright pack (chrome ash tray, chrome handbrake button, chrome door handles and silver mesh grills), Sports pack 2 (16" 11 spoke wheels and AP front brakes with red calpers), smokestone interior trim with Gunsmoke Alcantara seats, matching smokestone hood cover, and coloured hood all included as standard. The Sprint was also only available in 4 colours.
All of these 'extras' were optional on a standard 160, so a non-Sprint 160 will not have all of the above unless the original owner specified them when ordering. (Sport pack 2 was standrad on the 160, regardless of if it was a special edition or not, so it was effectivly only an extra on the 135 Sprint).
FYI I used to own a Sprint 160 in Trophy Blue so if you need any more info let me know.