Just acquired what both I and the seller thinks is a Cub lawn tractor (decals painted over by previous owner). Looks similar to Model 76 or 81 but not exactly the same. Has a 16 hp Briggs Stratton 320434 with a horizontal drive shaft (appears to be stock--no fabrication evident). Check out the pictures. Is this a Cub? Which model is it? Thanks for your help in identification.