I got a mechanic who rebuilt the engine for me but never finished the job. The only thing left are the pistons which he already changed but I think he got the wrong ones. I had my uncle check and he says three are the same and one is different (currently seated in the block). I have a 1.6L block with a 1.5L Vtec head though the mechanic claimed it was 1.7L head. I'm told I need the correct pistons for the block, I think I need the standard ones but I don't know what size they are as my uncle says there was something about 8.0 stamped on the ones in there and something completely different on the 4th one (though I'd guess std means it's only one size it can be). I really need some help. My car's been down almost a year. PLEASE!!!!!!???????