I would just look up a generic amazon one, they're pretty mass produced with similar variants that all do the same job.

mine: https://www.amazon.com/dp/B07HBYZ5B6 There's some cooler ones out there with like air breathers or a dipstick, I don't really know if an air breather is good since it would create a vacuum in the system? Someone could comment here and correct me on that. I like it because it has a filter built in is all.

generic $5 bracket from Lowes: https://www.lowes.com/pd/R/5003415955

You can probably grab hose clamps from Lowes aswell, a bag of 20 for like ten bucks.

3.8" ID fuel line from Amazon is $16, but I stopped by my local autozone and picked up a 5ft tube for $5.

Note you will need a hose cutter, so you can either look one up on Amazon, or if you went the local store route like myself, I asked Autozone to cut the tube for me.

I'm positive, here's a Mishimoto Catch Can and here's one from Amazon.

Here's another Mishimoto Catch Can and a Amazon one.

Mishimoto Radiator Fans, Amazon 2 for 1

Mishimoto Curved Blade fan, Amazon Curved Fan

Mishimoto Transmission Cooler, Amazon

Mishimoto Aluminum Reservoir, Amazon

Etc., etc., etc.

They may have a few items that they designed and make themselves, but it's a very limited stock. The price for the things that they actually make, you might as well buy from a more reputable brand like PRL since the prices are very similar.

Again, Mishimoto tries to put themselves out there as a high quality brand, but they sell mostly cheap stuff and have very little research and development.