I’m probably off here but I would think EBay would be your best bet at trying to find one. Maybe the Japanese eBay site as well?

 

I have seen a couple frp or fiberglass bumpers on ebay but they’re in the dominican lmao 😂 i’ll check out the japanese website though, thank you!

 

Maybe try EKB-plast? I want to say I’ve heard of them being good rep pieces. I know you want genuine but that’s gonna be super hard I feel like.

 

EKB was the first site i checked and who I planned on using but Im worried about the durability of the fiberglass.
plus i do have the genuine hks rear bumper so I don’t rlly want different materials lol