In 1972, Wheels magazine test drove a Clubman GT for an extended road test and wrote up their experiences over a number of issues.
The current owners of Wheels have set up an index of articles each issue.
Unfortunately they don't have every month digitised - maybe you have to pay for that.
Check out this site:

http://arc.bauer.x-cago.net/vw/edition. ... 8-19720501

I read these articles at the time and they prompted me to buy Hella Quartz-Halogen headlight inserts and ROH Contesta alloy wheels for my mini!
And they say advertising doesn't work....

I read them too, then went out and put a Webasto sunroof, Clubman tail lights and Clubman dash and heater into my MK 2 Cooper S (as one tended to do these sort of things in the early 70s). They're all still in there.

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Slide
1965 Mini Van (1360)
1970 Mk2 Cooper S (1310)
1978 Rover SD1 V8 (4.6)
1996 Land Rover Discovery V8 (4.0)

Clubby taillights must have been all the rage back then. This 1970 ex police S was wearing them in 1974.