I am looking for a new carb for the stroker I am building and have decided for the street Demon, but not sure what CFM range to go for. I have a holly 650 on the warmed over 351w and it ran good but this engine is different. Demons are 625 cfm, which is lower, or 725 cfm, which is more. I am leaning toward the 725, what do you think? A few other notes is my stroker is a 351w stroked to 393, Trick Flow twisted wedge heads, roller lifters and rockers, performer rpm, electronic dizzy and AOD. The mustang will see mostly street use but occasionally will be at the track. Thanks for any input.