Quite simple: this is the very best Pulp-inspired RPg on the market today. The engine is modified d20, but fine-tuned to the stunts and technology of the time and style. With lots of add-ons, sure, but this one really has everything you need to start a sound and fun campaign full of two-fisted action and .38 special reasoning.
I heartily recommend it for anyone seriously into Pulp, as it is one of the best researched tomes you will ever find.
[5 of 5 Stars!]