Adapters?

A friend of mine gave me his old set of BBS RS 007. The only problem is that its 5x120. I found a website that makes the adapters. Anyone wants to give me the specs for 4x100 to 5x120? Hub size of the car? Not too sure on how to measure the big size on the wheels.. Any help on that too?? Lmk.

Specs:
16x7 +25 offset
16x8 +25 offset
3 Piece wheels
1inch size center caps
dull gold (will restore them)