@daddelbud,
You're in a similar position to where I ended up over the weekend. Upgraded to a 3600 in my v2 A4 case and put the AM4 adapter for the old Cryorig C7 I had lying around. It's really struggling and super loud. V different to the LP53 I came from cooling a 3570K.
I looked at alternatives and saw 645LT builders still seem to struggle with the side panel bulge, so initially ordered a Black Ridge. But I keep thinking it might be possible to fit this in there with some careful routing below the RAM...
So today I have rather rashly cancelled that and switched the order to the Asetek kit as the price difference didn't feel that much after getting the fan and thermal paste bundled too.
Praying it'll fit, given the temp (and presumably noise) benefits...
Now to go find that guide to modifying/removing the front USB on the V2...