Well sitting on my bench is this…… I however would like to try and get the Holley 650 working as a challenge and learning tool. But those adjustable air bleeds are definitely looking at me straight up!
That should be a good start. Change the base plate to the Holley and relocate the IFR to the lower part of the metering block so its submerged. Does the main body have a Tslot restrictor in the body?