Ack I threw a load away when I left my flat. I would have given it away just didn't have time. Full set of fittings in white (bits power) two rads etc. In fact no, make that three rads. I just don't have the space now man. Shame, but, it has stopped me from serial fiddling (fnarr).
Its the problem with golden oldies, they lack little details like offsetting the fan mounts to fit rads...
Yes, because I'm about to list more or less a full loop on the marketplace If memory serves the Define C should be fairly straight forward Looking at photos the only pain will be pump placement.
The XE version may or may not be too fat to fit in the front of the Define C (dunno how big the cut out in the PSU shroud is), but yes, in general you can stuff a 360 rad in the front of it. Cheaper? If you want new this is basically the only game in town: https://www.ekfluidgaming.com/parts/ The performance difference isn't all that big between alu and copper, so well worth considering for for those on a budget. There is however a hidden cost: As you should never ever mix alu and copper in the same loop there is effectively zero compatibility with WC parts from other brands.
its totally dependent on your skills, willingness, and time I can't say that X will fit Y out of the box but if the numbers match up you can make most things work, your thinking a 360 rad in a case that's got a OD of 440mm tall, case spec's say it can handle a front 360 with 144 thickness so add in fan fatness and do some math it will work, its just going to be tight THEN add in fittings and tubing and bend radius of said tubing, even soft tubing has a substantial radius and you end up with not impossible but not exactly a drag n drop situation as far as aluminum and copper... yes YOU should not do it, but its done all the time in AIO's (and cars and industrial) cause they have educated nerds not putting random crap though the loop, but for joe blow putting walmart distilled water though a loop with god knows what dyes and additives its not a very fun experience
The wraith is supposed to be not much to write home about, even a cheap aftermarket cooler looks like it lets a 3600 perform better. I mean it will do the job (ish) but it'll be hot and noisy.
When they popped on the cooler from a 3600x on a 3600 they essentially ran the same. (Edit: and that cooler isn't as good as the same named cooler with the 2600x as they've removed the copper slugged vapour chamber). The stealth is rated 65w tdp and so can throttle it but it will work. You can always try it and go with an AM later if you don't like it. Edit: Personally, i'll be picking up a 3600 but won't be using the stealth but that's just me.
Well if you want quieter it'll certainly be better than the stock stealth and will keep it cool enough to let it stretch its legs.