Dave
I can't view anything on the store page for your site... I went Store > Intake Manifolds > VW .... and it's just blank.
Tried clicking on the PDF link, and still nothing.
Clicked on both the CSS validator and XHTML Validators, you've got errors on both. Contact your site builder!
I'd love to check these out and i'm sure you want people to be able to see them and buy them. I'll be checking back but if you could let us know, or PM me when it's up, that'd be great! Keep up the good work!