I pretty much dump the clutch at 5k and mine hooks and goes like a bamf. Stock UCAs, Steeda lowers, car is lowered on BBK springs and Illumina shocks/struts. MM CC plates and BFG Comp 2 275/40/18 tires out back. Only issue is the ****ing 4 link rear end gets squirrely and snaps the rear when I bark the tires. If I keep the car, I'm not sure about adding the weight of a torque arm and the IRS needs $1k worth of mods plus the cost of the IRS to be servicable and is still better for t3h twistiez than the 1/4 mile. Looking into the Baseline/Team Z upper setup as ppl are cutting ridiculous 60 fts with them and they don't seem to be too hard on the torque boxes as long as the seams are welded.
That is another thing, the torque boxes in these cars usually need to be welded or install battle boxes or both if one is going to be doing serious launches.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.