From what I've read these compressor wheels are quite a bit larger than a normal gen 1 3582.
-Fit Vehicle: Universal turbo for performance use, racing car etc.
-Fit engine displacement 4-10L Up to 1700HP
GEN2 Point Milled Compressor Wheel with
65.7mm Inducer 82.6mm Exducer
GEN2 Anti-Surged Compressor Cover with 0.72A/R, 4" Inlet and 2.5" Outlet
Ceramic Dual Ball Bearing System Turbo
GEN2 10 Blades Turbine Wheel with 62.3mm Inducer 68mm Exducer
Turbine Housing: A/R 0.83, Dual Vband, 1.01 is also available.
I may just go with the GTX3584RS's so I have some room to grow... this is a harder decision than I thought it would be. I don't want to make a mistake