Honestly, I like it... However, while the banner looks really good.. I see that you have a website that offers different services I truly recommend a more "professional" type of banner. I see that the logo is also at your shop as well.. So I'm assuming you wouldn't want to remove it, So.. why not make it smaller and put it to the left and add some important stuff on the side such as the phone number! Overall, it is very nice and simple and the rest of the page looks professional. When I went to the site though, it was hard to tell the purpose of it. I only figured it out when I saw "Services" so it's always good to make it look more of strong services website. similar: http://usautobodyparts.com/ http://www.usautoparts.net/
Honestly, your page look like it is under construction yet. I did not like the cars for a classic site you understand. I thought I would see mercedez, cadillac, and more you know.
As for the Header at the top, I would make the Letters Classic Car Clinic Shiny (to pick up the shine in the photos of the cars below $ tie it all together and keep the eye flowing in your page) and also I would Emboss the letters to give them dimension. So, Classic Car Clinic should be in nich Raised, Embossed, Shining Letters. Cheers and Prosperity to you, PS #10 Hire My Classic Cars, but maybe where you are from you would say Hire Me Classic Cars. My is possessive pronoun.