I have been looking for one of these for a while. I figure this is perfect for the 305 until I get the big motor done. Got rid of some weight as well. It is a Weiand 8004.
https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-ash3/1559527_10201988033556064_998567914_o.jpg
https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-ash3/1559527_10201988033556064_998567914_o.jpg