Standard, yes. Well, certainly the 182 cup is. Although I wouldn't recommend the swiss cheese lead weight standard one. Aftermarket exhausts are lighter and are better made and therefore last longer. Just don't go all max power - get a nice tasteful one.
It failed the MOT due to sucking air. They've managed to find the offending hole so I'm good again, at least for the time being. I couldn't wait for a group buy unfortunately. Will opt for the RS192 come the time