do i get a single or dual mass light weight flywheel for my early model

[ROLLingKING]

i have an 87 325is. production date is like 3/87 i think. My question is, do i have a single mass or a dual mass flywheel?
i want to go lightweight when i put my clutch in and already have a 6 puck sprung spec clutch a member sold a while back.

So if i am dual mass what can i do to make it single mass? less moving parts is less chance for failure. or if im already single mass where is a good place to get a durable pressure plate and clutch parts individualy. oh and which parts ill need while im in there. throw out bearing etc...

ill add that the car is daily drifted so heavy duty is preferred. ive seen HD pressure plates, but idk if i believe the hype. my stock shit has held up to a lot of clutch kicks but is on its way out the door

[MR 325]

If your car has the M20B25 engine you'll have the single mass flywheel.