Ishapore 2A1 bolt parts

[Haze Gray]

What parts on the Ishapore produced #1 Mk 111's in .303 are compatible with the Ishapore 2A1 in 7.62 Nato. I do know they use different extractors but I may need a new bolt head and wonder what other bolt parts are interchangable and should I stick to Ishapore produced parts for the 2A1. Thanks