Hot rodders like one they term "Sanden Shorty" SD7H. Search the H.A.M.B. site http://www.jalopyjournal.com. Other Sanden models may work, but the body is longer. I have several Sandens, but haven't worked out mounting yet. I have a Mopar bracket for my 273 that looks like it will get me mostly there. Haven't thought about my 225 slant. Kind of hoping others will do the legwork. Syed fabricated his own slant bracket for his convertible in Malaysia. Look up his recent post.
