Assembling T34/76 and Need Advice

See the thin exhaust pipe that comes out of the heavy duty exhaust mounting? Rustall that thin pipe or not? Tamiya recommends metallic grey (burnt iron or gunmetal). The museum tank is inaccurate of course, the dummies who tend to it just paint the whole thing (sometimes even the tracks) the same green color.

BTW, you don't want to miss this website if you're going to build that new T34-85 from Dragon. The photographer is obviously a modeler and this is the ultimate pictorial reference to the T34 family you'll find anywhere, unless you want to buy that Tamiya CDROM.

http://www.gjames.com.au/chris/t34/index.html