Which Intake

I'm new on here. I have just aquired a 68 Dart. Motor is a 360 with a mopar purple shaft 296 duration .557 lift 110 lobe seperation solid lift. from what i understand it's stock heads, dunno what casting, with 1.92 valves. 9.5 compression. currently has a weiend accellerator intake. with a holley 750 hp. i want to change the intake to either a mopar m1 single plane or a victor 340. anyone have any experience with these intakes? i used to have a 95 dakota with the m1 4 barrel intake and it ran very well. (11.92 @ 114) 4000 lb truck with a/c, stereo, 17" r/t rims. anyway, i plan on making this car alot faster. guy i got it from said it runs mid 12's. i am plannin on a 340 stroker. so whatever intake i get will go on the new motor. goal hp is around 800 on nitrous. mid 9's is the goal. so any suggestions?