I saw the you tube video of a guy using a Tokico 4 pot caliper and he stated he got the adapter bracket from here. Is it still available? What’s the cost if it is?

I saw the you tube video of a guy using a Tokico 4 pot caliper and he stated he got the adapter bracket from here. Is it still available? What’s the cost if it is?
there was a guy here that made one. Oldguy3 or something like that. there may have been another person making them back then. was a couple years ago. do some forum searches, you will probably find the old threads

Which exact caliper do you want to use?
I suppose custom-made adapter can be made for any caliper+fork combination.
A rotary-table makes it easy DIY.

http://thesicshop.com/index.php?main_page=product_info&products_id=713
https://japan.webike.net/products/21316899.html

There's this one, but I really don't like loading bolts in shear.
http://i1157.photobucket.com/albums/p596/rojoracing53/Mobile%20Uploads/4D6A149B-6F28-42D7-93EC-5A32CECFF8A7_zps1t9kr36t.jpg

Here's another option
https://www.ninjette.org/forums/attachment.php?attachmentid=30181&d=1399041201

Check this out: https://www.svracingparts.com/store/Ninja-250-300-Brake-Caliper-Adapter-Brackets-c10561193

I can get a set of Tokico calipers on eBay fairly cheap. I really don’t have a preference, just looking to upgrade and stay on budget..

Ideally, you'd get radial-mount caliper. Check with SV Racing Parts if Tokico model you're looking at will work with their adapter.

Which Nissan caliper would I need for my 300 (nonabs) so I can look for the adapter? Will a right front from ZX-10 or 6 work

Which Nissin caliper would I need to look for to put on my 300 ( non-abs)

I saw the you tube video of a guy using a Tokico 4 pot caliper and he stated he got the adapter bracket from here. Is it still available? What’s the cost if it is?

Here's original thread you were looking for. Seems to be one-time deal.
https://www.ninjette.org/forums/showthread.php?t=182732

Here's complete adapter+caliper kit:
https://www.omniaracing.net/en/brembo-racing-3034-40mm-forged-axial-left-caliper-kit-with-bracket-kawasaki-ninja-250-300-p-19478.html


Sorry, I was mistaken about SV caliper adapter, it's not radial-mount. Your best bet is SV adapter which seems to work with CBR600F4 Nissin calipers. Ask them which other calipers their adapter fits.