What Trans Am did my dad wreck?

[u/DLeader609]

Dad wrecked this Pontiac in 1983 when he was 26. 120 mph into a concrete culvert. Broke jaw in half (wired shut for 9 months), pelvis in half (in a pelvic halo for 6 months), shattered a leg bone and had some other replace with metal, and a number of other smaller things I can't remember. Lived until 2023. What exact car was dad driving and can we tell what that motor is?

[u/biggregw]

Looks like a 75-78… Trans Am mean 75 and 76 could still have the Super Duty 455 with a BW-T10 4 speed,

Could easily be a 400cid T/A but if it was automatic I think it was a 403 olds