I created a custom field x_part_number and added it to the product.template model.  I referenced this field in the product template form and it worked fine.  I did this before I knew more about Odoo in the beginning of our development and added it through the web interface. 

I plan on fixing this with a custom module addon once when I am done with this development version for our company erp.  We are using this system while I am developing so I cannot do it now.  

Now I have the need to change the purchase order line from Product Name to this x_part_number for the purchase order as well as the request for purchase order.   

I am a beginner with Odoo and have learned a lot recently however I am stuck on what is the best thing to do and what to do. C

Can I inherit directly to the view?