It is a brand new Sunny (B310) radiator (the larger type to suit the A14), so I won't be changing it. Basically a stock 1200 radiator but about 5-6cm wider

There is only 7.5cm of clearance between the radiator core & the water pump pulley, so most thermos appear to be just a tad to fat to fit, hence looking at a pushing thermo but if that doesn't work there's no point.

With a brand new radiator & all brand new gear through the cooling system in theory all the thermo will have to do is cope with idling at the lights (or perhaps burnouts).

Are most of the problems people have with cooling systems relating to them using blocked 30yo radiators (or A12 radiators on A14/5 motors?) or is there an inherent problem with the stock cooling system?