edelbrock sp2p... will I regret it?

I know there are some threads out there in which this intake has had its faults & merrits detailed. i have one of these I picked up locally & it now sits atop my 73 318. but before I bolt on my carb & reconnect it all, I'm starting to have reservations & I'm wondering how much of a difference I'll see if I just pull the trigger on a newer intake like a performer. So far other than than an intake & 600cfm Holley, the engine will be stock for the time being. So what I'm asking is, should I keep the sp2p because I wont miss the difference or is the difference significant enough that I should start searching craigslist & ebay for a performer? thx in advance.

~Sae