Ah onto clutches
If you don't have an an existing half decent 6 or 4 spring clutch then I would seriously consider fitting
anything else.
Both 6 and 4 spring can be reliable, however neither are that great. The 6 spring bearing arrangement is notably inferior to the 4 spring, but I dont rate the 4 spring either (its better but). In both instances cobbling together repro parts and good 2nd hand can result in a lot of headaches
.
I ran a 6 spring for 30 years on my 500 single and it was adequate . I have run 4 springs and they can be OK too. But neither compare to some of the after market clutches with proper bearing arrangements.
So it does depend what you're starting with; if you have a complete clutch (6 or 4) persevere and it'll save some money and can work. If you have nothing or incomplete/shagged clutch, please seriously consider the expense of starting from scratch.
A decent clutch makes a big difference; you can actually change gear and pull up at lights without stress.
Suzuki GS550 clutch conversions worth considering, 2nd hand they are cheap as from a wreckers. My road a10 has a converted Suzie clutch and my race bike a BNR