I have an 88 iroc with a 350 TPI. I put a new intake manifold on and now I have no spark. I fried my msd 6al, bought a new one and it ops cks good,replaced the coil,ign module, pick up coil,cap, rotor, plugs and wires, new distributor. I have also checked all of the wiring. I have also performed all of the diagnostic in the chilton's manual and still no spark. Any help will a appreciated, thanks nate

 

Any ideas