In my head, the alternative is water/meth shot directly into the pressurised manifold.
I want to machine one, maybe two, bosses into that manifold. One of those bosses might find an N20 nozzle to house.
That aside, I still think the KB 2.1L Flowzilla is the [perfect] blower match for any street driven, stock 302 long block. Once you start adding heads and associated mods the choices become more difficult.
I would wholeheartedly recommend this kit to anyone who wants to remain stock with more HP to include Fox Cobras. Relatively simple to install, and very simple to put back to stock. Supporting mods include (to do it right) 255L/hr High press fuel pump, 42 lbs injectors, wideband, and a tune. Optional: Anderson 4" Power Pipe, elbows and couplers, clamps, 90mm MAF, 80mm TB and spacer (Accufab), exhaust.
Cheater method: 255L/hr High press fuel pump, Fuel Management Unit, wideband
Highly Recommended: Boost-A-Pump regardless of what fuel pump you use (this is more about crappy electrical systems than about the pump)
With all the optional mods, this blower can split an OEM block down the lifter valley. It is however, uncommon.