buy a front disc break set up from a 68 which includes calipers,spinles and discs for $300. Or should i wait and buy a conversion bracket kit to use 04 breaks and go that route. my car is not a race machine i just drive it around town.

Will the 68 spindles limit my steering?

 

Almost positive that the '68 stuff won't work with your '66. Somebody else better verify before you buy.

Personally, assuming you don't have and/or want 17" wheels, I'd get the granada kit form discbrakeswap.com or the factory style kit. Pretty good prices on that website.

 

I already have 17 inch wheels