Car: Jag XF 3.0
Join Date: 10th April 2006
Thanked 2,774 Times in 824 Posts
Good question! (Which means I hadn't really thought about it...)
I would say that if it's CTR specific (which really boils down to the engine), then keep it in the R forum. If it's a common part/question (so that'll be all the electronics for example), then keep it in the appropriate forum.
When this forum started, there weren't many forum areas - but I gradually increased the number of areas as the need arised. If the Type R section grows (I thought it would stay small, given the presence of the CTR site, but then having seen the raging arguments and bickering that goes on there I can see that it might not retain its exclusivity - and also given the fact that R owners can draw on a years worth of experience from regular Civ owners) then I'll add sections to keep things neat and easy.
I'll have a proper look at it and maybe move things around when I get home in a couple of days.