Stop using the air and or the heat. You should run fine.
But yes. You'll have to replace the heater core.

Or delete it. It does weigh a bit.

Removal of heating core/AC unit - The Toyota Supra Forums

Maybe this will aid you chambers.

I hope. It should atleast let you know of other options.

wow, that looks like a son of a gun to get out, thanks for the link, I daily the car as of now so dropping the heat and ac is not and option, lol. I love the creature comforts. Thanks.

I like them too. But I like speed even more.

Sorry. It was just food for thought.

I haven't deleted min either if that tells you anything. But mine still works.
If it shucks, it may come out.

No problem, I'm not looking to get all the speed in the world with a NA, but thanks for the idea, never hurts to get all ideas from all points of view.