Really the battery relocation did nothing for me at the time I did it.. I have to mention it cause someone always calls me on it if I forget it... and when I ran the 13.92 on street tires, that was NO TRACTION in that combo whatsoever... I had to leave the line @ idle with a slow feather on the throttle or smoke them all the way down the track.. leavin the line with that technique netted me a 2.05 60'... and the drag radials.. well the best I have ever got with them was a 2.07 60' ( there is one exception when the density altitude was - 700 ft and it did manage a 1.948... but only that once with a negative DA )
A bunch of suspension mods??? well my homebuilt traction device is a reverse pinion snubber that did not do much for me until I upped the HP out of the hole with the bottle, I managed a 1.827 on the 35 shot...
and the Comp Engineering shocks ... less than $50 for the pair...

it is true the cheap and free mods are the best... my CAI did not do much for overall power but I can now hotlap the truck at the strip and not lose time due to heat soak... fact is the longer I run the truck the faster it goes...
Most of the mods that I have done will have no effect till the bottle comes into play..... I could have run the 13s with just the weight redux, tires, wire pull, and CAI.... but I really can't claim that as the truck was not setup that way.