I am putting a zetec(1800 130ps) engine into my xr2. At the moment I have a Janspeed 4-2-1 manifold which mates to the xr2 system perfectly. I have 2 choices:

1. Use zetec xr3i manifold and weld flexipipe to the bottom and connect to my xr2 system.
or
2: Buy an adaptor plate for the zetec head and use my 4-2-1 manifold.
The con with this is the holes don't completely match so not such smooth exhaust flow at head.

Is the 4-2-1 manifold better (even with the adaptor plate) on the zetec than the standard 1800 zetec(130 XR3i) manifold?