quoted from perfectrun.com.au
*In the table below, the TYPE of each intercooler kit stands for following things.
G---More capacity, but the same style and location as factory intercooler.
B---Bigger and more capacity than genuine, and will be installed in front of the radiator.
V-SPL---High efficient intercooler kit for light-modified cars.
R-SPL---High performance intercooler kit. Specially designed core construction offers maximum cooling performance for high boosted and high powered cars.
R-SPL HG---In addition to R-SPL performance, the kit comes with buffed side tanks and buffed all aluminium pipings to offer shiny show-car-like style.
ECR33 RB25DET 8/93-5/98
G / R-SPL 12020070 192 x 250 x 119mm A$1356 Suitable for genuine turbo and also GReddy turbo kit
B / R-SPL 12020071 A$3442 Suitable for genuine turbo and also GReddy turbo kit. To install this product, front bumper rainforcement, etc.. need to be modified. Not for the one with GT Auto Spoiler.
B / V-SPL 12020078 240 x 600 x 76mm A$1634 Suitable for genuine turbo and also GReddy turbo kit
B / R-SPL HG 12020077 240 x 600 x 76mm A$2051 Suitable for genuine turbo and also GReddy turbo kit
B / R-SPL HG 12020150 276 x 600 x 76mm A$2399 This product needs to be installed with GReddy Surge Tank Kit (Intake Plenum).
B / R-SPL HG 12020151 294 x 600 x 115mm A$2920 This product needs to be installed with GReddy Surge Tank Kit (Intake Plenum).
B / R-SPL HG 12020152 276 x 600 x 76mm A$2051 OK for automatic transmission model.
Hope it helps