Turnng the cap 180 is probably not possible. You will need to remove the dist. and rotate the rotor 180 then reinstall. gEt it close then put on the timing light and twist the dist body until you get the timing just right.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.