'79 C3 rollbar or seatbelt bar

[Imo Apita]

Been thinking about a 4 point harness, with or without a seat change.
What is the best way to get a bar in there to attach the shoulder belts to?
Haven't measured to see if these will fit but this is the style i'd be looking for:

Linky;

http://www.hyperautoparts.com/shop/...ING-Black-Black-Patches-289-pair-p-70551.html

 

[MYBAD79]

Here you go:

http://vettemod.com/forum/showthread.php?t=478&highlight=smart+bar

 

[Imo Apita]

Sorry, didn't want to be rude, thanks for the info.
Being used to heavier and bigger cars driving fast in the 'vette scares me a little. A full roll cage will take too much room and money, any roll bars out there?