There's more than two companies making these things. Here are some links to a few, all of which are cheaper than the Gartrac one.
[url='http://www.grp4fabrications.com/product_info.php?cPath=21&products_id=43
']Grp4fabrications[/url]
[url='http://www.ekmpowershop2.com/ekmps/shops/prepfab1/escort-mk2-adjustable-bias-pedal-box---hydraulic-clutch-54-p.asp']Prepfab[/url]
[url='http://www.burtonpower.com/prodpics/large/RD249A%20Pedal%20Box.jpg']Burton[/url]
[url='http://www.peterlloydrallying.co.uk/index.php?main_page=product_info&cPath=18_37&products_id=1207']PeterLloydRallying 1[/url]
[url='http://www.peterlloydrallying.co.uk/index.php?main_page=product_info&cPath=18_37&products_id=331']PeterLloydRallying 2[/url]
[url='http://www.ralloy.com/product.php?product_id=160&category_id=40']Ralloy[/url]
Which one to pick eh. decisions, decisions.