Well, two entries for the actual series aren't looking likely anyway.
But to answer your question. No advantage is gained since both cars will be at the same track anyway. The drivers you choose are up to you. it makes no difference. The teams dont get points, the cars do.
Example
TeamX - FXR
TeamX - FZR
Drivers x,y,z,p,l,m,n,o
Round 1 FXR-X,Y,Z,P Wins and FZR+other drivers second
Round 2 FXR-l,m,n,o Wins and FZR+Other drivers second.
Even though the drivers have switch the point would be
Round1 FXR 50 FZR 40
Round2 FXR 100 FZR 80