Appropriate Wheel Offset for 18" Wheels?

kursplat said

ya, the 69' I'm doing has an early K, should be the original /6, but there was no motor so I still need to confirm that. choices being a full 73' up K and steering linkage. or keep the 69' K with /6 to SB conversion mounts and add 73' spindles. then I would use the hotchkis front bar so it wouldn't be so wide. probably going with firmfeel upper arms. cars going to see alot of street driving. guess i'll call FF and see if they know how the drdiff 13's fit rear mounted...
I love doing this, but it's a pain deciding which way to run when nothing's locked down yet :)

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I'm not too familiar with the +73 stuff. Apparently they have better engine mounts or something and feed the sway bar thru the k-member (I don't recall which was the better Hotchkis sway bar). I believe Firmfeel still uses bushings in their UCA's (which has its advantages and disadvantages). It will probably be better for you since you're doing a lot of street driving. Mine have rod ends, but I put rubber boots on them so hopefully they'll last a couple thousand more miles.

A potentially cheaper, and still cool swap could be using the '73+ drum spindles and attaching Gen I or II Viper calipers to it. They use 11.75" rotors and real Brembos (unlike mine, which are practically copies). You'd just have to look on CL or Ebay to find a pair. Sometimes Rockauto will stock them. That will allow you to run the 17" wheels with easy, still look cool, and offer sufficient braking (especially since yours is still a street car). The only downside is that those calipers are technically like 20 year old technology, but they should do the job. My car may see autocrossing and road racing in the future so I went with larger brakes.

http://www.doctordiff.com/viper-caliper-mounting-brackets-for-mopar-drum-knuckles.html

Bellow is a slant-six K-member I pulled off of a '71 Demon. It should be the same as what you have.