I would expect a 4/23-scheduled build date Mustang (not just Pace Car) should what is described above as a Type 1 hood (rolled corners, no dimples). The two articles statement about being fitted with the "improved" '65 hood was incorrect; the writers apparently saw a Type 1 hood with the rolled corners instead of the highly documented Type 2 hood with the unfinished corners and assumed it was a Type 3 ('65 production) hood. They were written long before my research revealed the existence of a Type 1 hood and the subtle differences between a Type 1 and Type 3.
I would like to see photos of the hoods listed here, both on the Pace Car restoration project and the Gail Wise Chicago convertible. The photos should include shots of the leading underside edge (not just a close up of the dimple), and the date stamp in the underside corner closest to the driver.
I've seen two examples where an owner pried open the rolled corners of a rare Type 1 hood to craft a Type 2 hood for an early car.
On a Pace Car note, be aware that the only differences between a Pace Car coupe and a "regular" Mustang are the paint and decals. Also the PACE CAR radiator support markings, but the other markings would be consistent among all early Mustang.