Mitsubishi GTO 

I'm not sure where you got the idea that a 428×257 jpeg has "sufficient size for wikipedia". It's 72kB. The photo you removed was 1515×856, and 270kB. The thumbnails may be te smae size, the full images themselves are most definitely not. We don't, as a matter of course, remove good images and replace them with inferior ones. The subject of the article is the 3000GT/GTO, not specifically the turbo, which was outsold 2:1 by the normally aspirated versions anyway.

It also more closely met the standards recommended at Wikipedia:WikiProject Automobiles/Conventions#Images, specifically #6 ("The quality of an image is always more important than the quantity of images included") and #10 ("Pictures for the infobox should depict the front ¾ view from the height of an ordinary person", bold text mine). Hence my reversion of your edit.