Mine was a 2L-TE head - so assuming 1KZ will be a tad more - but in Oct 2015, costed me just under $2000 to put a new genuine one on. Got trade price from Toyota - head was ~$900, bolts were $7 each, cambelt kit, gasket set, head gasket ($150). Previous owner fitted a new rad, fan and fan hub which ...

Lake at start is pretty easy to get past if you have enough clearance - turn off the ramp just before water. Done last the last few times in my Surf, works a treat. Rocks just after it can be a tad tricky though if you lose speed