No you can not use the standard pistons with the 262 head. With pistons at Top Dead Centre (TDC) there is about 6mm interference into the head. To test this simply raise Number 1 piston to TDC and drop your 262 head on top. Check for copious amounts of daylight visible between head and block as the head rests on the pistons.
The so called high dome version are a standard sized piston with extra thick crown, then bulk metal is milled off to form the dome.
cheers Chuck.
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