Trunk Mount Batt. Opinions needed

Did it ever crank over Ok?
It would crank over just ok. When warm it would sometimes need a jump. This was with a new battery. Current battery dips to 11 Volts when cranking. I have a new starter in it as well. Thinking Alt. wires should go direct to Batt. for better charging ? Alt. puts out 14.25 volts.