4g63 engine blocks

[peanuts]

hey guys ive been doing alot of research and i am struggeling to find a technical source on which blocks can be used to replace the 4g63 6 bolt vr4 block. is there a write up any where. i found one and its says the series one rvr is the same, i was hoping someone here with experiance info could help with this. thanks brett

 

[4piknup]

i think the sonata 2.o dohc would go in, it has the block mounted roll stoppers required for vr4. can post pics to compare block bosses