For many years the Odyssey 1500/1700 12V battery has been considered to be THE deep cycle cell for SPL purposes. Especially in street classes where power is limit.
Capable of providing 1500 amps for 2 seconds before the battery drops to 10.2V, its deep cycle and makes it perfect for the purposes of Street SPL.
Here I've created a test, comparing the Odyssey 1700 to standard lead-acid batteries.
Odyssey SP1700 as measured: 950 CCA, 12.5V stable, 13.1V float