Who races w/OE Magnum short blocks

I doubt I will race it but I'm having Brian at IMM Engines building me a 408 stroker magnum engine for my 03 Dodge Ram. I'm figuring around 6000-6500RPMs.

408 9.4 compression "around" 485TQ 425HP
EQ heads 2.02/1.60 ferra valves w/bronze guides plus beehive springs and his magic touch
Icon 4030 forged pistons
Scat forged rods
Scat forged crankshaft
High Volume oil pump
Comp Cam custom ground roller cam .220/.220 @.50 550/550 lift 112lsa
Stainless 1.6 ratio roller rockers (I don’t know the name brand)
Truck style oil pan
Hughes FI intake (Eddy Air-gap)
F&B 58mm throttle body
Ford racing 39lb injectors
SCT tuned
Flowtech headers
Roller timing chain
No oiling mods unless Brian takes it upon himself to utilize them.