Lightweight 15 inch wheels (15-inch, 4X114.3, offset fitment for G20)
The following is what I know 100% to work (what we have used on our 95 G20 race car)
13 pound Kosei K1 15x7 ET45 (no longer available new so you'd have to find a used set)
13 pound Konig Network 15x7 (ET40 IIRC) (also no longer available so you'd have to find a used set)
15 pound Sacchi 15x7 ET40 (these happen to be both 4x100 & 4x114.3 and available via ebay for now)
New 15 15x7 Sacchi S2 4x100 4x114 3 40mm Silver Wheels Rims | eBay
I don't remember the exact weight but these work on the FRONT of the G20 WITH rolled & pulled fenders on coilovers (not stock suspension):
15x8 ET35 Rota RB (Aspec special order if its still possible to get them... In hindsight I should have gotten 4 of these when I had the chance but only got 2)
15x8 ET40 Rota Slipstream (I happen to own 8 of these but have not seen them available for purchase recently anywhere and I did have to use 5mm spacers as well.)
13 pound Kosei K1 15x7 ET45 (no longer available new so you'd have to find a used set)
13 pound Konig Network 15x7 (ET40 IIRC) (also no longer available so you'd have to find a used set)
15 pound Sacchi 15x7 ET40 (these happen to be both 4x100 & 4x114.3 and available via ebay for now)
New 15 15x7 Sacchi S2 4x100 4x114 3 40mm Silver Wheels Rims | eBay
I don't remember the exact weight but these work on the FRONT of the G20 WITH rolled & pulled fenders on coilovers (not stock suspension):
15x8 ET35 Rota RB (Aspec special order if its still possible to get them... In hindsight I should have gotten 4 of these when I had the chance but only got 2)
15x8 ET40 Rota Slipstream (I happen to own 8 of these but have not seen them available for purchase recently anywhere and I did have to use 5mm spacers as well.)