600 CFM, all I need. Check my math!

Work with what you have and make it right. It will run well. If you decide down the road to go to a Holley...

My thinking is this. I'm new to carbs. The Edelbrock from my understanding, is easier to adjust / tune than the Holley. I have no desire to go to a Holley just based on that alone. The 1407 does not need to be removed from the intake. At my skill level (low for carbs), I need to stick with what is simplest. To learn. Aside from what I believe to be flooding the car somewhat when cranking cold, the 1407 seems to run smooth around town. It also gets crap for fuel mileage, and is low on power. I don't fully blame those last 2 aspects on the 1407. The exhaust is in bad shape. If the exhaust were done (should be complete in a month's time I hope), it would likely help lean it out. But the wideband will spell it all out. And I should be able to tune the pi$$ out of the 1407 to make it run as good as it can.

Don't get me wrong, I'm not expecting excellent mpg in the Scamp. But I use mpg as an indication of the state of tune of the engine. I expect that a 360 cubic inch old school V8 in a 3,100 pound car to yield 20 mpg cruising the interstate. However, with the 3 speed, and turning 3,000 rpm, I don't think it will achieve that. But I think 16 - 18 should be feasible. When I get on the interstate, I cruise (this thing) slow and steady. 55 - 60 mph, and I don't care who or what tries to read the serial number on the bumper. That's why other lanes exist. I'm in the slow lane, they can get left.