The only ones that I know of, that are currently available, are the Hooker 5208.
Only three tubes go through the fender well.
The fourth goes down inside the frame rail.
Search eBay for EM-2710. Around 30 bucks each. No need to spend big bucks.These work great.
You can also check out NAPA 602-1653.
It's the same as the EM-2710.