You wont know until you look on most items like gearing. I love the C bodies so I'd leave it alone it it's noce. I mean dont tear out the heart for another car... Not leave it stock. Headers are expensive but logs will work. I wouldnt do the intake until you do the cam and timing set... Which I would do right away. Use something small for torque and curve the factory distributor (and add the NAd or whatever...) Run a nice set of duals, and it will cruise forever.