ported intake and NOS

Guys, i'm cleaning up the car and fixing all of the vacuum leaks, and in the process i've taken off the intake (pcv wasn't connected properly even!). This is the only piece i dont have a bill for and it doesnt look ported to me. I know for a fact the heads were done (have all of the stats). My question how much hp will porting gain me on the intake. Number 2, i'm saving for a NOS kit. How quick do you think i will run and at what MPH with a 150 shot.
Thanks for your imput

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306ci, TFS stage 3 heads. port/pol edlebrock performer intake.
77mm mass air, 70mm TB, crane 2030 cam, Mac full length headers, flowmasters
3.73 gears and more.