Make sure Quadrajet Power knows the electronic or CCC Quadrajet, they are different. Great part of having the 442 carb is you have the better calibration as metering rods and jets I believe are different and hard to come by. I am pretty sure Sean Murphy Induction and the guy that did my 78 403 carb, Everyday Performance does the electronic QJet. My carb, since I had core, only cost $250 without plating and included back barrels rebushed. Make sure who ever does the service is looking at and replacing the bushings as necessary. Speaking of core carb, when you send your carb in, write down the number that starts with 1708 on the drivers side. Your carb is valuable and has a richer calibration than the Vin Y carb. What do those Thornton manifolds look like inside around the divider and outlet openings, smooth? Your trans is also valuable as it has a higher shift point, better calibration and servo from the factory. What rpm are shift points in the Monster trans? Your car will shift close to 5000 rpm full throttle stock. Most non performance 2004R shift at 4000 rpm, some as low as 3000 rpm, my stock trans in the 88 CSC shifted at that rpm.
