Pretty sure any standard frame will work. I have these on mine: https://smile.amazon.com/dp/B018FUYN0O?psc=1&ref=ppx_yo2ov_dt_b_product_details
I had this frame custom-made for my SE. Because I wanted the thinnest bezel possible, I had to accept that the text wouldn't be readable from a following car. So it's only for me (and a few observant pedestrians).
This is the one I purchased: https://smile.amazon.com/gp/product/B002WD3LFY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I'm actually on a quest for the right screws. My tabless frame is thicker and needs longer screws, but I also want some that don't rust.
I bought one of those silicone license plate kits on Amazon and it came with a whole bunch of stainless steel screws and bolts and washers and caps, as well as the security Torx bits for the screws.
I went with this one. I found it cheapest on eBay. Amazon also has it, but it’s more expensive than ShopMINI or eBay. https://www.ebay.com/itm/142117452521?epid=1785000387&hash=item2116dc3ae9:g:NyAAAOSwNRdX2Vq~
