I'm only rattling chains because I'm working on that circuit for my modified car. Battery in the back; solenoid in the back; 2 ga starter wire only hot during crank. Plus an alarm system that interrupts the crank signal.
Barely back on topic, since I'm getting old and lazy, I've found that the Milwaukee M12 (the Fuel is a more powerful version) 1/4 drive or even their 3/8 is perfect for this kind of stuff. It's about the length of a Snap-on swivel head although much larger in diameter.
Sometimes a long extension is a pain to maneuver around so stick the socket on a shorter wobble extension, get it on the bolt head, and then insert a standard extension into that one to get to the needed length. On the SBF you just need to get forward of the motor mount with the ratchet.
And remember that the Alternator post is always hot, so disconnecting the battery is still a good idea.