no they are actual itb's feed by a single plenum. not one throttle body. the differences are t28, 8.3:1 compression, not 8.5:1, stronger rods, a mechanical drivetrain(solid lifters) much better flowing head design. the exhaust mani is better flowing, bolts on the flywheel are larger, 440cc low impedence injectors. the parts are harder to come by since they didn't sell any here, but they can be gotten. obviously it has a different maf than a regular det also. you can run whatever maf you tune the ecu with though. the cars around me i have only ridden in one, it is fast for a stock car for sure. instant throttle response and a good awd launch makes one fun car.