Stock mechanical fuel pump output?

[e rock]

How much can I reasonably expect the stock mechanical fuel pump on a '71 350 to put out?

The new motor has considerably more power and will be running a ~700cfm Holley, but I'm told that I should have at least a 750cfm on it. The builder says redline is around 7500rpm, but I'm not racing it and realistically it'll just be serving daily driver duties. I have a Mallory 110 electric pump (and 140 filter) that I can put in, but I'd rather keep it simple if possible. I know there are high-output mechanical pumps as well - are they worth the $$$?

Thanks,
Eric