Find the biggest battery cables you can get your hands on.
I used ZERO gauge cables for the positive and negative sides.
To note, I'm just using a factory style remanf. starter and a Duralast Gold battery and a set of ceramic coated Hedmans.
Haven't had one HOT start issue since the cables were installed 20+ years ago now.
When it's hard to start, voltage drop the battery cables to see if there is any high resistance issues going on, Google or YouTube the procedure if you're not familiar.
