Converting to a Non-A/C Heater Box: Questions That need Answers

Yes, many have discussed it. I recall some made templates to cut holes. If buying an aftermarket kit like from Vintage, insure you have the correct firewall since their climate boxes fit the openings.
yea, Looks like I'm going to have to make my own at this point. I'm in the middle of a dash frame swap so shouldn't be too hard. I just finished rebuilding my heater box. So I guess I do that next..