OK, that's good information,
What did you do to accommodate the longer valve stems on your head? Be specific & post dimensional comparisons for the 318 valve Vs the \6 valves & how much you raised/shifted the rocker shaft. (if you don't mind)
Raising/shifting the rocker shaft might help pushrod clearance for the 1.6 rockers.
I will be taking a LOT from the head deck & quite a bit from the block deck to get my quench distance.
Raising the rocker shaft might bring pushrod angles back into a resonable spec.