Sadly not all lists are as current as they should be but, I hope its useful...
GP Breakers - Monster
01443 480777
email:
gpmc@btconnect.com M1 salvage - 600ss engine for parts
http://www.m1salvageandbreakers.co.uk/otherengines.htm WJF Motorcycle spares - Whitchurch - 600ss & Monster
01948 840404
email:
bikes@wjfurber.co.uk J25 Breakers - Hertford - Monster + COMPLETE 600SS £900 !!!
01992 582088
Allbike spares - Monster 600
http://www.allbikespares.com/index.html sorry there are so few but here is a nice list:
http://www.all4bikers.com/breakers/index.php Good luck - Frank