The first time I saw a 442 with tripower I thought the hand bent copper lines on the end carbs looked homemade by a shadetree mechanic. Decided to do mine a little different.....

 

Here's what they sell today. Yours look real nice and cleaner. I have four set ups, all lines were identical that I bought.

 

At the time, I thought the copper lines looked odd for another reason...

Copper work hardens. The constant vibration would carry a risk of line breakage. The factory must have tested this, and I didn't hear about any engine fires associated with that potential problem.

I agree your setup looks far better. Nice work.