This 1993 RX-7 was created to roast some tires as you can see in the video below. The 383 cubic inch Chevy V8 is hooked up to a Procharger F1C supercharger to produce 843 horsepower. For more information and photos click the source link below. Source: BangShift
For sale is a clean 1993 Mazda RX7 with a Hinson Supercars LSx swap kit. The transmission is automatic and the owner is asking $9.000. Check out more details on the link below. Source: LS1Tech
Here is a video of Joey Redmond from Wrecked Magazine explaining two builds he brought to SEMA 2011. He begins talking about the RX-7 at 1:19 on the video. Source: Autoholics
This video below shows a first generation RX-7 with a twin turbo 427 cubic inch Nelson Racing built motor swapped under the hood. Watch as it easily smoke the tires whenever it wants using 1,650 horsepower. Source: Over-Boost
A very nice 1993 Mazda RX-7 with a LS1 / T-56 is up for sale. The car has many upgrades besides the engine swap. The car is $30,000 and located in Florida. Check the source link below for more details. Source: 6SpeedOnline
This is a very clean 1995 RX7 with a LS2 swap for sale. The car is located in Jacksonville, Florida and the owner is asking $24,000.