Where did you find your Holley/Webber Hot Rod Dad? I've been looking into replacing my Rochester 1bbl on my 250 with something better. Or would the Carter YF be a better option since I am looking into this just to increase my gas mileage b/c 11 mpg doesn't please my mom(who pays for my gas

). What modifications have to be made to my truck to get either of these to work(adapters or converting my manual choke)?
Thanks
Drew
P.S. What kind of gas mileage can I expect to get?
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'66 C-10 stepside