I'm not familiar which is which but the one featured in the Christine film seems to be the best looking of it, which I think is the 2nd one. Or maybe not.Tri-Five Chevrolets
1955 Bel Air 2 Door Hardtop
265cid. V8 makes 180HP / 0-60: 10.2 seconds / Price when new: $2,166 ($19,845 today) / Value today: $48,600
1956 Bel Air 2 Door Hardtop
265cid. Dual Carb. V8 makes 225HP / 0-60: 10.7 seconds / Price when new: $2,329 ($21,339 today) / Value today: $51,300
1957 Bel Air 2 Door Hardtop
283cid. Fuel Injected V8 makes 283HP/ 0-60: 7.9 seconds / Price when new: $2,338 ($21,880 today) / Value today: $54,000