When the only supporting mod you needed was high octane unleaded...
333.5whp/329.5wtq dyno pull at a MCCGP club event in 2006. Car had a 2.9 pulley on a GenV M90 supercharger, XP cam, 105# springs, 9.4:1 compression, SSAC headers, stock heads, no intercooler, GT100 unleaded Cam2