MK 2 Supra. 5mge NA and RWD. I owned several of these and they are EASY to find in disrepair engine wise if you were going to swap. They have good rear ends and gearing already (some available with 4.11 lsd stock. 16 gallon tank. Car is on the light side as well.
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Also on a side note all 3 of the GM FWD cars I’d ever dream of building are not even on the list.
The MKII supra has a pretty good braking system already (4 wheel disc), 2.8L inline 6 5mge and 5speed trans. RWD already. Engine bay has room for a V10 viper motor if you wanted. Independent rear suspension. I think It’d be a stout contender with the right mods.
Some cars I have in my backyard not on the list I always wanted to Lemons or Chump car build: 91’ Olds Calais (GM N body same as Grand Am more or less, 190HP 5spd 4cyl). 85’ Buick Omega Hatch (GM J body same as sunbird or cavalier). 79’ Chevy Vega Cosworth. Light, Fast, RWD.