What are the "configs" of the Micra/Polo fans used in the MKs?

Are any of the Micra/Polo rads without the top filler cap?

My "old" engine was just connected up through the thermostat to the Rad, which just has an overflow on the rad neck connected to the overflow bottle. A manual fan switch for hot queues (basic, nothing fancy)

"new" engine has the thermostat and rad filler all as one. If I plumb this to the existing Rad I'll have two pressure caps and two overflow pipes sharing the overflow bottle. Not ultimately a problem but will look a bit shoddy.

Cheers,
James

I used one of these

NEW RADIATOR CAP VALVELESS (bottom)

link
http://www.nfauto.co.uk/header_tanks.htm

Ah and just seal up the rad neck overflow pipe.

Dah! - Simple!

Cheers