Well with my combo the 24# weren't enough up top so I went to a set of 30# and man was there a difference, nice smooth power curve and it doesn't go lean up top no more. I run 40psi of fuel pressure.
You will need atleast a 190lph fuel pump to feed the 30#, a 155lph just doesn't cut it, trust me been there done that.
I say get the 30#'s I hate buying parts twice
