In your other thread I said you don’t have a fuel delivery problem or a vapor lock problem.
You’ve got a cooling problem. You described your cooling in post #11. All is well until you get into slower traffic.
Putting on a new pump and lines will only empty your wallet. You won’t gain anything. You’ve already got a system that works. Remove the electric pump though. It’s not needed.
You need to get a handle on your cooling problem. Install a fan shroud with a correctly spaced fan is what is needed.
There’s a link in your other thread for shroud’s.
I’ll link it here again.
https://www.speedwaymotors.com/shop/...m_content=Shop