Rogue Engineering e36 Underdrive Pulleys
For 328. These have some miles on them, but these are aluminum so unlike the stock ones they dont break/chip/wear.
Pretty noticeable difference vs stock.
Just the two pullleys (waterpump and power steering), belt will need to be replaced. Can provide part number (its a readily available belt.)
Paid ~250US, asking 140$ CAD.
Looking for a quick sale. I'll get pic's, but seriously, they look like pulleys.