What percent window tint should i get?

I have a 2010 Ford fusion SE in tuxedo black. What do think would be the best percent tint to get put on all four Windows and rear windshield? I want one shade all the way around.

Get whatever is LEGAL in your state. They're not all the same.

Changed spark plugs and wires distributor cap and roter for 1994 acura entegra and I get no spark