does this require dash removal or like 150 just remove glove box??
Exactly like your F150 – pull glove box, undo bolts for access cover, remove cover, yank old core out, put new core in, reinstall cover, reinstall glove box, done. You may, however, wanna pause after reinstalling the cover, and before reinstalling the glove box, and fire up the truck and put the blower on high – my access cover was badly warped from all the heat running across it, so it was letting quite some air leak past its seal and under the dash, instead of being forced through the ducting. I used some clear silicone to seal the cover to the rest of the heater core plenum, I’m sure it will be a pain to remove the cover the next time I need to, but at least I’m getting more air though the vents now.
