body shell question

[2-alex-2]

ok wanting to know a few things about shells.

recently brought an sv pro and came with standard shell and what i believe to FTW shell. wanting to know what the difference between the two and what ones the best to run with.

also i will be looking to get a new shell to be painted to match my other car so what would be the best shell to go for standard, FTW or will an sv2 shell fit and would one be better or is there realy not much difference between shell styles.

thanks in advance for any help