We have changed 3 well sorted out cars over to Alcohol carbs in the last 3 years. 2 were on E85 before the change, all 3 three picked up and ran well.
One was a 4500 and the other two were 4150's all APD carbs one with electric pump and two with their belt drive pumps.

I'm sure they all make good stuff, just sharing my experience with APD.

Al