Use more than one Financial Plan type on different versions of Budgets on a Project

We have a requirement to create 2 different cost budgets for the same Project. As those budget amounts are further being used for different calculations we are exploring options to use separate them by using different financial plan types for them.

But we are not able to use different financial plan types for the same Project. So, we are looking for different ways through which we can identify those different Cost budgets in reporting and user maintenance activities.