When I did a search on eBay for 914 bumpers the only stainless bumpers shown were about $1,600. I searched again yesterday and they are now $1,869.
A friend sent a link to the ones shown in a reply above for $1,339, but for some reason these never show up in a search.
Someone recommended checking Harrington Group and theirs are 1,465BP, or a little over $2,000.
All three come from Vietnam, but different sellers.
I placed an order for the $1,339 and I'll let you know how I make out. The link for these is below, but as soon as I bought them, the listing shows that it has ended. It's like they only had Qty 1.
$1,339 bumpers on eBay