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J30R9 is good. It has a Viton tube with chlorinated polyethylene cover. The R10 hose has a Viton cover. CPE is often used for electrical wire insulation and has good durability under hood.

FYI, the hose clamp I linked is an example only. You'll have to measure your hose and select the specific diameter clamp.

If you use the SAE J30R10 hose it will outlast the steel lines in both corrosion and wear.

These hoses see 5-10 psi. It will hold with a clamp on the tube but if you want a barb you can flare the tube and use one of these. https://www.mcmaster.com/5346K77 I do not recommend worm drive clamps for small diameters. Use a pinch clamp. They're inexpensive and so is the install tool...

I would hose it. Use SAE J30R10 hose with FKM tube and cover and it will outlast everything. https://www.gates.com/us/en/fluid-power/engine-hose/fuel-line-hose.p.4219-000000-000012.html