Concourse fuel line kit for 70 Cuda 440-6

[tman]

Being that my rubber fuel line hoses are about 16 yrs old, I think its time to change them out.  Are these so called concourse kits any good?  I get skeptical of these restoration hoses nowadays.  All these markings eventually wear off after a period of time.

OR do I just get regular hoses from a parts store.  I believe I will need 3/8 ID hoses and 1/4 ID hoses for return line.  Before I have to check underneath, does anyone have any idea the lengths I will need to get.  Its not that important for me to get KV markings but don't mind it if they are good hoses for today's gas and have the correct inner diameters.

I was looking at the Wise book and it mentions inside diameter for 3/8 hose is actually .357 and 1/4 hose is actually .232.  So is this important for a bit of a tighter fit?  I sure hate to get 3/8 ID hose and its loose fitting. 
Thanks for the assist.

[HEMICUDA]

I've never had any problems with the reproduction "KV" fuel hoses.

[69BFan]

The concourse fuel line hose kits that QQD supplies to the vendors that they sell to is a Goodyear hose that they stamp with the correct markings.  In purchasing these kits, you get the correct clamps for the various applications and a ground strap with the different size of hoses.

[Chryco Psycho]

if you go with generic hose you do not need much 6-8" at each end is all

[tman]

Thanks to all that replied.  Very informative.