I used a 57 distributor on a 292 w ecz-g heads with a large two barrel holley. 350 cfm. Holley has the same 2 barrel with 500 cfm. Option of no electric choke. Circletrack
https://www.summitracing.com/parts/h...IaAg9aEALw_wcB
Decent info here.
http://ford-y-block.com/
Also here.
http://yblockguy.com/
Try the 54 up forum also. Sal can rebuild your teapot if you go that way.