What clutch for ZF 320 tranny?

[TritonR]

I've been reading through a bunch of forums for my M50 swap, I will be using a ZF 320 Transmission. Something that I've gotten a bit of mixed feedback with is the clutch/flywheel combo, from what I understand the M20 flywheel/starter is more beneficial. But some forums say to match the clutch with transmission, others say it's best to also use a M20 clutch, but then I've read it won't last long if it gets run hard or that it's not a good combo for street cars. I was just hoping you guys may be able to help clear my confusion before I start hunting down these different components. I appreciate any feedback from you guys!

[ross_jsy]

m20 flywheel, lightened if you want, m20 starter and clutch is what you want

[e30rapidic]

I have a US S50 (essentially an M50) bolted to a zf transmission. I used my stock M20 single mass flywheel (shaved down to 11 pounds) and an M20 clutchmasters stage 2 clutch kit. You can run a unaltered single mass M20 flywheel but will need to grind the vanes off the back of the oil pan for clearance. Not sure about the dual mass flywheel.

THE MUSTS
starter has to match the flywheel
clutch slave cylinder must match the transmission
If you run the M20 clutch setup with a zf, its best to get the taller throwout bearing (from a 323 I think)

I had a stock Sachs clutch kit that lasted 100 miles before a strap on the pressure plate broke (estimated 260hp at the flywheel). No issues with the clutchmasters kit