yep, too true andy, only way i got it to fit, same size as the n14 pulsar core and radiator but larger top and bottom tanks was to incline it slightly at the front to clear the bonnet frame and locking mechanisim (its reclined backwards slightly)

i was able to keep the stock rad surround mainly intact.
you really need to trim the tabs but with most aftermarket alloy ones, they are larger than the stock fitting ones unfortunately. they fit into the 180's/r32 and s13's easily but not into the 1200's.
im using stock ca s13 raqdiator now and it fits. its same size as sr stock radiator except top tank outlet on other side. was sitting 35-40mm too tall initially- now fits
see too tall initially

after trimming the tabs and making locating tabs so the bottom hose has 1 maybe 2mm clearance on the rad support panel
see the trimmed tabs


mildman had to "relieve" the radiator support panel slightly to fit his in (lower it to close the bonnet- he used a big hammer ;) )
true you could pay to have the radiator core trimmed to make it fir but not really worth the $$$ unless it was a big $$$ radiatior.