u cant tell me u have never heard of a gsr block that has cracked once it reaches about 100k or so and has constantly been reved in the 8k's. dont start getting into denial just because one may be more extravegant than the other...its a fact that the LS blocks are stronger (gurdle or not). also dotn forget what size turb u will be putting into each engine...or do u all think that every turbo is the same size...?