cAN ANYONE ADVISE OF A BIGGER ENGINE THAT WILL FIT INTO A ltz 400?

[Andy W]

Seized Mine, And Trying To Find A Replacement.
Disappointed In Engine And Wondered If Anyone Knows If It Is Possible To Fit Larger Sized Lump In, And If So, What?
Cheers

[08_EFI_LTZ_400]

I would possibly try the 450 big bore kit that is available?