You know, you are allowed to run very low boost with an intercooler.
4-4.5 PSi intercooled gives an easy 520 crank HP. That's a good +100hp over stock.
Intake temps are incredibly low. Very little heat being produced by the compressor and virtually all of it being removed from the intercooler.
The biggest enemy of the engine is... HEAT.
Removing the primary CAT's is one of the most vital elements in reducing the stress on the engine.
Downward force on the pistons/rods/crank will be similar in this setup compared to a 4.6 stroker running the same power. 4.6 Dinan is quoted around 520 crank HP yes?