Trunk Mount Batt. Opinions needed

I just saw this thread.
I did the same thing on a 68 barracuda fastback , the ford relay died in about 8 months , went to the orig. 68 mopar relay that came on the car , been on there every since . I did have to replace the ns switch plug on it a couple of weekks ago .

And I run 24 degrees of initial timing , so if u get everything right , that shouldn`t make a diff.