Revell tend to aim at the cheap end of the market with less detail. Quite often you will find no engine. They are OK for those with a low budget.
The recent WWII Tamiya kits in 1/32 are really very nice kits. Stuffed full of detail and, like Zoukei-Mura, produce show stopping highly detailed representations of the P-51. They are the top end of the market and are a much better build experience with detailed engines, office and much more.
my recommendation would be Tamiya or ZM if you have the money. The Revell kit looks ok when done, but the Tamiya or ZM look far better in the cabinet and with a polished aluminium finish will draw the eye.