hello everyone..

i am new  this forum.. i wish if someone could help me with this this cylender block..its 5 port petrol engine cylinder block...i have made 3d model of it...

can someone plzz tell me how manufacturing of it would be done? where suppose to be parting line? and wht should be manufacturing process?..someone told me this block suppose to be manufatured in 5 parts n then joined together...

thanks in advance