600 Holley vent tube question

I have a 600 Holley that I am considering using on my 273 after it's built, and I noticed something odd about the vent tube for the front bowl the other day. I noticed the tube looked like it had been cut off even with the choke horn, and it was shorter than any Holley vent tube I had ever seen. I figured I'd just fix it when I put a kit in it. Then, today I was looking at an ad that @Brooks James has up for Holley 600's, and noticed one of his carbs has the exact same vent tube. The other 600 in his pic has one that sticks up farther. Does it make any difference? If it won't cause any problems when the front float is set right, I'll just leave it alone, and I don't have enough experience with Holley's to know if it's even replaceable. Thanks.

Holley 600 carbs.jpg