The BBK never really caught on. It's a different design than what we're used to seeing on a 5.0, but not better at anything than the TF or Holley.

A new BBK kit is bumpin up on $600. For that kind of money you could get a new Holley SysteMax or RPM II.

They' also had some issues with the fuel rails leaking. I don't know if that's been fixed or not.
TF, Eddy, or Holley if I was buying.