They can be made to fit but you are looking at modifying the botton yoke (see http://wotid.com/tls/content/view/60/47/) and yes you will need calipers. One of Sam's excellent spacer kits :hail will come in useful too.
I guess it will depend on how the bidding goes on your K8 items. I might be inclined to go with these instead.
http://www.ebay.co.uk/itm/SUZUKI-GS...le_Parts_13&hash=item4acb188eb1#ht_604wt_1170
This is the same as I used and with the spacer kit it was a straight shoe-in.
There's these that might go with them too.
http://www.ebay.co.uk/itm/05-06-SUZ...cessories&hash=item5af6b84f94#ht_4353wt_1170I
I got lucky when I did my conversion in that I got the entire K4 front end (brakes, wheel and forks) for quite a good price. Worth the money for sure. Its made a real diffference to the bike.
I guess it will depend on how the bidding goes on your K8 items. I might be inclined to go with these instead.
http://www.ebay.co.uk/itm/SUZUKI-GS...le_Parts_13&hash=item4acb188eb1#ht_604wt_1170
This is the same as I used and with the spacer kit it was a straight shoe-in.
There's these that might go with them too.
http://www.ebay.co.uk/itm/05-06-SUZ...cessories&hash=item5af6b84f94#ht_4353wt_1170I
I got lucky when I did my conversion in that I got the entire K4 front end (brakes, wheel and forks) for quite a good price. Worth the money for sure. Its made a real diffference to the bike.