Just to add a visual, this is MC 3.5 and 37" stt pro's, before I got around chopping this set of stock fenders. I keep thinking about dropping to their 2.5"...

 

No real reason for 4" just seemed moderate to me. Meh...It's whatever. Thanks to you guys, it's sorted out now (flipped DL, relocated TBs) and just kept the geo. brackets and stock arms. Just returning the control arms. Thanks for the replies.

 

For the record, I only suggested the MC lengths as a starting point as 1) I knew they provided the lengths in the instructions, and 2) I figured that MC springs would net him more than 3.5” if he had those…getting him close to the lift he currently has, so the measurements would be a good starting point. I also noted this wasn’t an exact science, and would be a little trial and error getting it dialed in. Those starting lengths would be better than a willy nilly random starting point. Not that MC has the whole geometry thing figured out….could have given links to any other manufacturer….lengths would all generally be about the same starting point...and there's a wide range of acceptable length combinations netting a range of caster that would have worked.

 

I hope you didn't think I was criticizing your advise, because I really thought it was great advise and would have been exactly the approach I would have taken given the situation. I was being more dismissive of getting into this situation to begin with sounded like something that could have been avoided with a little more planning.

 

Ok...I returned the fronts and buying MC rear CAs, calling it good on the suspension for a while. Yes I was a little hasty in my purchases. Its all better now so...