engine.
acid clean and bore approx $150
balance " $150
sevice head " $350
new pistons " $300-400
rings $120
bearings $140
welsh plugs $20
vrs kit depending which one$250
sealant $20
waterpump $80+
oilpump $100
injector clean $80+
if you dont do it like this you are better of just getting a replacement low k engine.
mick
p.s if the engine has done ove approx 150k km the bores will be ovalized so you have to take them to the next size, same with big ends and mains.