that's true, the motor has 9 crank and rods so prob an 8 turbo,
I was talking to simon Norton tuning man last night and he said he would be really surprised if someone bothered to re-build a 4 block cos he said there is a small half moon washer thing on the crank that's only 6mm and when worn leads to crank walk whereas on the 5 on blocks the same half moon thing is at least 12mm so most people change to a newer block when faced with a shot 4 motor as mine was, he asked me the block number and im sure its a standard 4....
4G63 TH6643
standard 4 right?!