Yea but I ain't got no stock block 5vzfe. Unlike game freak mentioned above ( whom I have only met once even though he lives 15 minutes from me). My block is bored, honed, and decked than built with forged rods/pistons, custom ring gap, arp head studs, larger cams, LCE valve train. This ain't no 6psi and blow your stock head gasket shit. I'm looking to run 20 psi on this block. So I think the gains will be there. Just being a bitch and want the TRD logo on the charger. Only reason I haven't gotten the Magnuson/URD.
Working on mapping out the fuel system ( fuel pump, larger injectors, stand alone ecu, etc) right now. Stacking those parts up so once I find a SC I'm good to go.
as a side note I actually don't know if game freak has torn into his block to handle the power he is pushing at this point...