The best way to access it is from under the vehicle . It's connected to the bottom of the gearbox with two bolts connecting it and a thick and thin wire.
The starter is on the left side of the transmission. The starter grounds though itsself.
Underneath the car bolted to the bellhousing on the gearbox
The SAC22 does not have a starter relay.
ask autozone
http://www.petting-zoo.net/~gkm/rx7/specs.html
its on the tranny, drivers side lower porton of the bell housing
The starter is located under the drivers seat beneath the car and is shaped sort of like a torpedo, I have great condition owners manual and have replaced that part once myself. If you need more clarifaction my e-mail is mgraf24@yahoo.com. Mike
If you look on the driver side back by the break pedle you will see the fuse panel
16.6 gallons
located under driverside,about 20 inches away from the front wheel.it's tucked tightly up by the transmission.
in the tank
yes, however you may need to adjust the wire harness to fit.