Modifying Manufacturing

This is certainly my first post, because i have combed and nothing close to my worries
Let me commend the initiators of FA. I want to modify the manufacturing module to enable workorders without BOM to reflect the situation where new products are not produced from a manufacturing rather the work orders generate fixed assets that can be transferred to Capital assets later.

i need help with respect to the relevant files/scripts to go to without breaking the logic of FA. will appreciate any assistance