broken Crankshaft

[filh]

Hello ,
A friend of mine broke his crankshaft on a 4AGE . He has a 3 ribs block , and small journals.
He was told that it was a common failure .....

It's a rally car , he doesn't want to have the same bad adventure .

Here's the question : will a big journals crankshaft fit his 3 ribs block .
He will have to change rods to fit journals , but will these big rods fit the forged pistons he have ? Or does he have to change pistons too?

Are the main crankshaft bearing same on both parts ?

and the last one : does somebody has the Toyota part number for the big crankshaft. He asked his local dealer , but he only have the EPC , are there are no measurment on crankshaft

Do you have any replacement suggestion HKS Toda or else ?
I'v added a pic of his car , he's a spectacular rallye driver as you can see
(162HP weber 45 dcoe powered )

any help welcome
Regards
Filh