273 mild build-----

I have decided to keep my 273/904 drivetrain mostly stock, just freshened. I need advice on what hydraulic cam to install and if there is an air/gap 4V intake available for this engine. Also, if TTI headers are the answer for this power steering equipped car or easier options are better suited. I just want the car for a cruise night/show & shine and it will eventually go to one of my grandchildren.
Thanks for any advice you can give, Douglas