You just mean 1.6 head?
Whats on the spark plug side of head? The # casting? 210 w53 a87. This makes a difference. In the states the stock early L16 were a 210 casting and best left stock.
The later ones had bigger valves and ports for better airflow with the SSS head being the best with the 1.5inch ports.
As for cams Ill let someone else anwser that one but I say get at least a 460 inch lift and some weber/mukuni sidedraft carbs or a weber DGES 38/38
daily driver get a 32/36DGV carb
rememeber new cams most need new rockers )or linshed. new lash pads of a different size and retainers, Cost is well say alot 2-300$ added if new then cost of rebuilding the head.
as for cam dowel settings I believe it came stock in the #1 postion but I put mine in the #2 dowel position for power sooner . 4deg adv #3 is 8deg.
timming the distributor is about 10 or with performance cam 12-15 (myself)dependong on the gas quality
http://www.geocities.com/dimer510canada/Heads.html