generac with a 10hp horizontal shaft engine

i have a generac and i am trying to look up parts for the engine but someone else put an aftermarket valve cover on the engine and now i don't know what the model type and spec is? i would greatly appreciate anybody who can help me get the closest number i can so that i can order parts. it is not allowing me to upload pictures, it is a generac power boss 5500 watt storm-plus thanks in advance everybody.

Does it look like this?
 
 
 
Model # for this is 
https://www.jackssmallengines.com/jacks-parts-lookup/manufacturer/briggs-stratton/briggs-stratton-engine/200000-399999-series/204400-to-204499/204412-0147-e1
 
Most of these 10 HP Briggs are the same or very, very similar.  I own 3 of them. 
Try to keep away from the NIKKI carb as their very prone to leak/cause issues.