Monte Carlo jack '78 to '88 (not after market). Never paid more than 20 bucks for one at a swap meet. Ebay prices used to be reasonable but maybe somebody found out how great they work on classic cars. Yes, they are GM jacks but protecting my car from damage is way more important than the brand of the jack. Those scissor jacks are a pain in the butt when you're on the side of the road,.....but they do work.