I just got around to installing the Forge unit a few weeks ago.
For me the fitment was great. The FMIC overall was a quality piece.
I opted to trim the shroud instead of removing it since I felt that removal would give the air space to route around the FMIC instead of through it. By leaving the top and sides of the shroud in place it forces the air to go through the core, plus it leaves a more finished look.
My issues were with the vendor not the manufacturer. Im happy with the quality of the FMIC and if I had to do it again I would go with a Forge (I just would buy it through a different source). That being said if I had received one that I felt was substandard in quality of craftsmanship I would send it back for a replacement.