Here's their contact info:
Address: 3944 Peck Rd # 8 El Monte, CA 91732
Their version is pretty authentic. The only thing you'll miss is the fried crunchy bits of garlic.
and a review I just posted for them:
Waaah...I talked to the folks at Singapore's Banana Leaf about offering this and other dishes (Hokkien Mee, etc). The guy said, "Yeah, my mom knows how to make that stuff," but kinda just put the issue aside. Where in El Monte is Little Malaysia (intersection?) Singapore food rules. I have no clue why it hasn't blown up in the US. I guess you just have to go there to get it.