It's your call on the reed assembly.If you are doing a proper restoration change it back to piston port.
But make sure you do connect the carburator to an air filter some how.
You can put the front end on your bike, just remove the triple tee and install it into your steering neck.
I am using a MX 360 front end on my 125 and 175.In other words the whole front assembly.
I certainly like mine,When you dial in the suspension and change the tires you can fly off road.
The bike is very respectable on the street as well.Makes max power about 10,000 rpm.
Here is the U.S.the WR 25OR is the only one of the group legal for operation on public roads. I have one and love it.
The original tires on the bike are more suited for road use.