For just carb set ups Summit makes a carb you can just lift off the top to change components. They sell them to support up to 850 HP. Of course there are small fasteners ( hex bolts I believe ) to secure the top but no fuel pours out between adjustments. Holleys are easy to tune it just takes time, power valve, jets, accelerator pumps and Vacuum Secondaries diaphram all need to be addressed. Unless it's mechanical Secondaries which is a different process all together. It's no wonder why kids these days use FI. I taught myself HP Tuners and Diagnostics analyzer to when I highly modified my 2002 Ram Air Trans Am. It had everything but the kitchen sink with a. 600 lift plus bumpstick.