svo30s are more then enough since they are actually 36#
i run 30s and im at 70% duty cycle on my 6.0. he has plenty of room if he goes there. right now hes probably maxing out the stock 28s
theres a difference between the psi on a lsx and a lt1/ford/TPI its kinda confusing but just remember a svo 30 is a 36# injector for LSXs a 36# svo is about 42# and a svo 42# is about a 50# injector…there is an equation to figure it out