Lower control arm bushing sizes???

In connection to an earlier post, how do i know what size Lower conrol arm bushings i need for my car? There is a choice of 1 7/16", 1 9/16" or from a different brand, 1.4375" OD, 1.5625" OD. Any ideas? I have a 68 GT with a 302 by the way.

So far in the bushing department i'm ordering polyurethane coil spring insulators, spring perches, End Link and frame braket bushings come with the 1" sway bar and finally a leaf spring bushing kit.

Is this all i need to get for a descent handling upgrade or are there other bushings i'm missing out on?

Thanks again guys.

Brian

PS. which rate for front coils is better for street driving, 550 or 620. Depending on retailer the rate varies.

yes, had a look, they're good value, but...

they offer 3 or 4 bolt versions of the upper control arms. What does this mean, are there 2 types or is it down to personal taste? ie. does it depend on how my car is set up now?

Also

Thanks.

brian