I have a semi-stock 97 Cobra. I would like to get the 2.1 Kenne Bell for my car. What is the safest/but most amount of boost I can have without destroying the block? Can you hear the whine on these like terminators? What additional mods would I need to help with this kit i.e. injectors, mass air, fuel pump, Throttle Body Etc? Is this kit a good option for this car with no low end torque? Would this kit be ok with 4.10 gears? Thanks guys