depends what youve got now and are you turboing it?


pro 2.0
2.0..... readily available pistons and tried and tested method moreso
you gotta buy new pistons on your 1.8 anyway
frst efi management will be enough on a 2.0 litre anyway

con 2.0
you need the 1.8 sump etc
sourcing a 2.0 extra expense