I took a pic of my dash and sent to the seller in aliexpress, he recommended I buy https://www.aliexpress.com/snapshot/0.html?spm=a2g0s.9042647.0.0.469a4c4dzv7k5g&orderId=8127093897738746&productId=32888260904 along with the RCD330.
finally installed the RCD330 unit all went well, that is until I switched it on and only the left passenger speaker is actually producing any sound. Gonna have to take it out again to see if I clipped everything in properly. Anyone had this problem?