Does anyone know what spring rates are appropriate for a street driven 2010 V8 sedan? BC's R-SPEC kit (I can't imagine the 5.0 weighs all that different than the 4.6) comes with 12k front and 10k rear defaults. Would these same spring rates work with Megan coils? BC is no longer selling their coilover kit due to height and spring binding issues and they are working on a revision. I have been considering just buying the Megan coilovers with adjusted spring rates as they come with 6k front and 6k rear defaults which are intended for a V6.