Best Battery To Run Full MSD Ignition

Purchased A Yuasa 620 CCa Commercial Battery over a year ago and Had It Tested and Its only 77% healthy , Basically cannot keep up with Current draw,

Batteries Here In NZ are branded Differently , But We Do Have The Optima Series

Whiich would be Better Yellow Top or Red


Seemingly I need !3.5 Volts Constant to run Msd


Is a regulator Needed ???

not enough info

this a race car?

you run a alternator?

this 12, 14, 16?? volt battery?