Tony Go down to Homeless depot!
Get some plastic pipe and glue.
That will work!!!! Cheap
The JAG/SU thing was a joke!!!!
Two pots work fine on the street
You must just have too much time on your hands
HONESTLY
There are many good used manifolds around designed proven and cheap
I like Nicson but I understand....you may like
Stevenson......
With that lump on your pistons you are not going to go fast anyhow.....Why the fuss