i have the dual weber 38 setup on my 235 in my 46 1/2 ton...i've also had my motor bored .30 over and had bigger valves installed in my 848 head with a bigger cam, certainly more power, but not like what they advertised........looks cool tho

http://i629.photobucket.com/albums/uu14/kurtdh519/002-1.jpg