340 6 pack heater hose fitting

[Cuda/Charger1968]

Have a question for anyone that might know, I am building a 340 6 Pack with an NOS Eldebrock Aluminum intake. The heater hose fitting appears to be 1/4" NPT going into the manifold. I have looked every where trying to find that size to no avail.
Any suggestions?

Thanks, RC

 

[Demonic]

The heater hose nipples are 1/2” npt, not 1/4. Classic Industries has them.

https://www.classicindustries.com/product/1970/dodge/challenger/parts/pf1004.html