My equifax credit score is 600 and experian 736 will i get a secure car loan?

just been on line and done multi credit checker. equifax and first show 600 and 690 and experian shows 736 which is the national average. I earn a good wage up to dae with all payment but have been late with 2 credit cards by a couple of days. I want to change my car and get a scured car loan on hpi for about �7k. will have a deposit also of around �500 to put down. Is it worth applying?