Need help finding scupper thru hull fittins

[bibijawa]

I'm having trouble finding two extra long stainless thru hull fittings in 1 1/8". The standard length from attwood is to short for my transom and I just bought some off Amazon that have a 1 1/8" barb but the thread is 1 1/2". I don't want to cut a hole that big in the transom if I don't have to. I can find the right length in plastic but I prefer stainless. Can someone recommend a shop or website where I can order these.