Mopar aluminium Master cylinder fittings

[COKE]

Hello all
I have a 1 1/32 aluminium master cylinder p5249271 manual and i want to go to 15/16" .
I was planning to install an old style Dorman cast iron mc used on 70,s A bodies with power booster.
The dorman mc has 9/16-18 and 1/2 -20 ports.
I know that the aluminium mc that i have installed right now is using 9/16 and 1/2 fittins but not sure about the threads per inch.
I have been searching and i have seen that they sell 9/16-20 fittings for mopar aplications instead 9/16-18
Does know somebody if i could change the aluminium mc for the cast iron one using the same fittings?
Thanks a lot

[Mopar Nut]

Hello all
I have a 1 1/32 aluminium master cylinder p5249271 manual and i want to go to 15/16" .
I was planning to install an old style Dorman cast iron mc used on 70,s A bodies with power booster.
The dorman mc has 9/16-18 and 1/2 -20 ports.
I know that the aluminium mc that i have installed right now is using 9/16 and 1/2 fittins but not sure about the threads per inch.
I have been searching and i have seen that they sell 9/16-20 fittings for mopar aplications instead 9/16-18
Does know somebody if i could change the aluminium mc for the cast iron one using the same fittings?
Thanks a lot

They sell adapters.

[COKE]

[/quote]They sell adapters.
[/quote]

I don,t find 9/16-20 to 9/18-18 adapters.I will have to order fittings and fabricate a line for each mc.