X2. I probably let go 75.00 already with the same problem.Jim
I did use the 3/8" brake line to the brass block and then used 5/16" to the carb inlets. I had a couple of goofs until I got it right but it turned out great. I had about $80 in return postage for all the so called "perfect fit" lines that I got from about every part place I can think. I went and got a cheap $6 tubing bender and used my double flare tool. I still can't believe that nobody can make these lines that fit. Good luck on your 66.
I have a Performer RPM intake.
Not sure what fuel pump I have, long or short?? Don't know enough about them.