Rotor button not turning in ED 6

[TURBO_GHIA]

well as in my other post the car died when driving it home from the shops.

so i checked to see if the rotor button was turning and it isnt ,so what does that mean ,whats broken ??
recently changed cam and fixed an oil leak ,a week later oil leak came back cause we didnt use the right gasket,so off the head came again and fitted new gasket,put it all back together ,cleaned it up and let it sit for about 10 mins ideling in the drive way

took it down the shops and drove it home ,not thrashing it or anything ,car started hesitating and made a pop sound ,pulled car over ,rocker cover gasket got blown out and now car wont start ,
so i changed the coil ,still no go,changed the dizzy still no go ,so i checked to see if the rotor button was moving and it wasnt ,so what could that mean,could of the timing chain slipped and stuff something ??


how much is a brand new engine ,or recon,or a wreckers job ,

will an EL engine fit in ,whats involved in putting one in

cheers jarrod