Exhaust cutout location?

I'm running a 302 with a fat (586 lift solid roller) cam and a set of 63cc 204 intake Z304A AL Heads with a PA C4, 380 stall and a brake, connected to an 8" with 4:11 gears running slicks at the track.
I currently run 1 5/8" long tube heades with 2.5 exhaust followed by an X pipe and a pair of flow master 40s with pipes all the way out the back.

Would I get better 1/8 or 1/4 mile performance installing a set of 2.5 exhaust cut outs fore or aft of my X pipe?
My first guess would be aft but the instructions show connecting them straight to the header dump. The further back you put them create more back pressure, right?
I really don't have alot of back pressure at the moment the flowmaster 40's do a pretty good job, it's just that I can't hear my car in the starting box very well when everyone else is running open headers.

Thanks,

There are some variables that you have to work with here. Is the cutout the same size as your collectors? do you have extensions on the header collector to take advantage of the added torque? how far back is your X pipe and what is the diameter of the tubes that it intersects with compared to the diameter of the "X"?

The headers have a 3" dump with 2 1/2 all the way back without header extensions.

Thanks,

Paul

Nice picture posted by Mr JosephEBlack on the exhaust cutout location. I encountered same problem yesterday and this really helped me.