if you would like to see the build sheet on our stage 1 or stage 2 transmissions go to ckperformance . com and click gm/2oo4r/stage1 or 2 and have a peek .also there is a story on the trans under tech articles and information section that was published in the gsxtra and remember, you are drawing on 18 years of experience. we also have a 2.84 /orv 2.52 first gear ratio 8 pinion planetarys,cryogenic output shaft ,and pro transbrake.as for who builds the best unit ,a salesman pedalling his product with mouths to feed will tell you anything to make a sell regardless of his pole positon(quality)so draw your own conclusions based on your research. as you know,i'm not the only one selling 2004rs.