I found this site that allow you to input your SU needle and compare it to 5 others in chart form. Pretty interesting stuff.
http://www.mintylamb.co.uk/suneedle/
[img][IMG]http://i615.photobucket.com/albums/tt234/nickmi/TR7%201975/Yellow.jpg[/img]
nick
'79 TR7 DHC
'76 TR7 FHC