On their website, they list the Supercharged Boneville through 2004? 2003 was the last year of that application. Their site looks fairly professinal, although I see some 'borrowed' images from another website or two. That'* usually not done out of professional courtesy alone.
If their prices are really 700 plus core, there are lots of cheaper sources out there that produce quality rebuilds. The most notable is www.canadiansupercharger.com
who also happens to have a FL outlet. You might want to compare your pricing with them.