Site looks good to me Mike, you like yours like I like mine, simple, no "flashy stuff" easy to navigate and easy to read. However, if I may and since you asked, it doesn't need anything added IMO, maybe some more tech and eye candy but it just needs a good clean up. Some pages have large images spread over it. In the Denso alternator page for example, the scroll bar still has 15% to go before I reach the "other side" of the page (see print-screen). Perhaps set it up to accommodate most screens? My screen is 17" so by no means an old narrow view.
I run mine so all text is tagged in 550pix blocks, no matter the screen it will only show in blocks of that width. Other than that it just needs a good tidy up, nit picking type stuff that OCD freaks like myself pick up. On some pages the font and page info stops but the page continues for some way without text/photos, just background (white). You just need to make sure all your "break" tags and line codes are the same for each page, maybe two
tags in the body after your last page on every page to keep everything the same. Only little, I know, but you did ask and if it helps, cool!
Either way, great site. It's good having a site as a point of reference.
Instead of trying to describe things to someone just tell 'em you website. Modern age, it's good.
Cheers,
Carl