I've not got a Direnza one but do have a ProAlloy one, which is deeper/thicker but the same height & width. There should be no problem fitting it, but I did find it a tight fit with a larger than standard GT2860R turbo. It's made much easier if you remove and replace from below, removing the radiator support bar (which is worth removing anyway to tackle the inevitable rust). Be careful when buying to get the correct turbo or non-turbo version (the difference is the small inlet pipe to takes the coolant from the turbo oulet).
1996 Portofino 20vt & 2000 Pearl White Plus
1985½ & 2016 2017 Fiat 124 Spider + XF Sportbrake