Is it steel? If so I’ve got the exact thing for you. 165mm, taper and threads all good. Yours for a donation to Cancer Research. PM me your address if you want it.
I use the Madison/M-Part Elite lower EC44/40 (HPT531) when I need to fit a tapered fork to a straight 1 1/8 headtube. RRP is £35 but it looks like you can get them online for around £25. Cheaper than the Wolf Tooth and Cane Creek versions...
I’ve got two options for you too. An original one without the cable tie holes and one with the holes. Both in good used condition with logo stickers intact. Photos shortly