I was actually in process of answering this yesterday and the phone messed up, so today have to get new phone...
As per the Unicorns; Unfortunately on IAAI and Copart. Too many were restored then the old fuel lines leak on hot engine, and the end result is not too glamorous. SW Arizona has several 80's C and K body trucks, Regals, Cutlass and Chevy A Bodies, and of course El Caminos. In various states I still have 83 Olds Regency, 89 Olds Wagon, 86 Cutlass restored, mild modified, 81 Firebird Esprit, 86 S-10. A few years back I was building a set for WWP Yellow Ribbon ride and while away for Army Reserve duty, my ex-business partner decided to steal the cars.
A few years back I bought and 84
Olds Delta 88 from IAAI for $200. It was beautifully restored, yet whomever did the work didn't change the ball joints..., and it was totaled. Parting it out was not a happy day, but AZ DMV had it listed as "unrepairable".
I can send photo of my 86 Cutlass and 89 Wagon. The 86 sat under a tree for 12 years. Was kept meticulous, by previous owner, she had just replaced tires, tune up, plugs etc., and passed away later that night. Her son didn't ever want to sell it so it sat for 12 years under the tree in front of their house. I picked it and its an odd one. It is a 4-door, yet has 442 gauge pack and the 442 aluminum hood, yet Vin Y 307.
The 89 Wagon was part of a movie project that didn't happen, "MFP USA", so it's painted up in the MFP Mad Max 1979 Scheme. The movie idea kicked around late 2016 after the "Fury Road" popularity, but full funding never materialized, I did the work so still have the car.
Pic below is a 91
Caprice just got yesterday for $800, ...needs some love to say the least. Fuel pump went out and was abandoned, so purchased from towing company.
A few years ago my friend found a GNX, an actual GNX. He did some speaker work for a customer that couldn't fully pay so he got the; "hey..., can you use this old car for parts?" Went to the customers house, under a sun rotted tarp with lumber scrap stacked on the hood. Ex-girlfriend's, son's car got left, doesn't run, it's in the way, don't know what to do with it... You just can't make this stuff up.
The other pic below is the FP I use for SBC; 1970 C-10 or
Impala 400 CID.
The next Pic is what I use for Olds Small Block; 1970
Delta 88 Royale, 350 CID.
I like the idea of the regulator where it is. Adjustable is the way to go, Q-Jet, Holley, Edelbrock, every carb and car is different. As a former engineer, I more appreciate knowing what I have instead of someone else's idea of a system of giving me what I "should" have.
One thing mentioned and thank you for posting is the Booster, absolutely rule out the booster. A few years ago I posted a reply to the Cutlass forum and mentioned this, yet all I got was flamed and criticized. Yet believe it or not... it was the booster! The OP was restoring an early 80's cutlass, and had purchased the booster/master cylinder kit, and had running and drivability problems.
Someone else mention fuel charge temp, and this is true. Not sure if still available, but one of the things we used to do for Street and Pro-Street was the "cool can". It has the fuel line swirled in a "can" and on cruise night you fill the can with ice, helps with detonation and a little quicker launch, we also used water/alcohol injection for detonation. Most of us had 10:1 cars, and could get 104 from the Aero Estates Air Strip, but on pump gas you needed the water injection, plus de-tune the timing, I.E.; lighter weights, heavier springs in the distributor.