ok so heres my question my setup is b18a1 bored to 81.50mm, wiescos 11.5:1 pistons, eagle rods, blockguard, exospeed stage 3 b18a1 head, ported and polished, flat faced valves, brian crower stage 2 cams, blox intake manifold ported to 70mm, blox 70mm throttle body, rc 310cc injectors, jdm 4-1 header 2.5" collector, and a 2.5" intake with velocity stack. also 100 shot nitrous. im changin a few things on the motor, like a hytech replica header,3" custom intake,and im stuck on the manifold. i purchased a victor x from someone for $100. but now i dont know if it will suit my build. im revving the car to 8200, and it says the manifold is good from 7-10K. should i just purchase a performer x, until i do my new build next year, which will be a sleeved 84mm ls, with 150 shot direct port? someone please give me there opinon on this.

 

you might as well just keep it man. i just threw on a victor x mani, and i noticed a huuuuge improvement. if you already have a 70 mm tb and a 70mm IM than the victor x will do nothing but improve the flow

 

Do some more research and you will find A LOT OF info!
However for your setup the Performer X in the better choice.
Victor X manifold are good for Turbo Stock Bore motors and any type of 2.0 liter, etc.
You will probably lose a lot of usable power running the Victor X on that setup even when spraying.

But like I said look up the subject and you'll find all you need!