Different Cost in CORP and TAX

We have a situation where the cost of the asset is different for CORP and TAX purposes.

I have two ways of achieving this

Method A

a) Add the asset in CORP

b) Manually add in TAX with required value

Method B

a) Add the Asset in CORP

b) Mass COPY

c) Adjust  the cost ( either through fa_tax_interface or UI)

In the second scenario there is an unnecessary adjustment for us. 

I want to follow  method A to avoid the adjustment transaction.

I wanted to know if Additions API can be used or if there is any other way to achieve and ensure the asset gets created in tax book with its desired cost with ADDITION transaction type