i'm planning on running 13-14psi. this is going to be on a gsr that has been sleeved out to 84mm by golden eagle. JE low com. pistons, eagle rods, ect. ect. i'm going with itr valve springs and port flow retainers. after all that i'll have to take it to john to get it tuned on hondata. this is going to be in a eg that i drive only on the weekends. i want to get up in the 325-350hp range. so i guess going with the inline manifold will be my best bet.