'69 Barracuda T56 swap, floor, cross member
My LCA bushings are rubber so prob a lot more flex. Ppl who dropped their k frame never mentioned bushing types. They do say camber is affected because distance between upper and lower control arms is greater. And headers exhaust will hang lower etc. So something to mull over and consider. Driveline angle will help me in that decision too.
Won't be doing anything other then driveline angles for next week or so. I wanna pause and think everything through. Plus body is worn down needs rest at this point.
But that hvac box might be coming out one way or another next because I don't feel like having that floor duct in the way of that tunnel work and no way to tunnel work under floor duct other then weld from under car or panel bond. I think that hvac box needs to be pulled regardless of approach since it needs a rebuild for AC going back in near term and I need it out of the way.
Yeah I'm sure the vast majority of people that have lowered the K have rubber bushings, since most people run rubber bushings. The factory hemi stuff obviously was. And I dunno if it would really be an issue. I know on my cars with Delrin bushings and the LCA tightened up it definitely seems like there's less "wiggle room" when installing the bars, but, like I said I haven't actually tried it. Factory tolerances probably have more of a say in how far you get to go than bushing type anyway.
I think taking the HVAC box out is probably a good idea. I agree with
@goldduster318 too, I'd much rather modify the lower ducts than anything else.
Now I'm spending all your money too, but it might be worth considering some of the aftermarket AC systems out there. If you're going to be rebuilding everything anyway, and clearly your car isn't stock, I'm guessing you won't be running the factory boat anchor RV2 set up. So rather than just buying all new stuff for under the hood and making it work it might be worth upgrading the whole system.
I rebuilt the heater box on my Duster and in my Challenger with a DMT kit, it's not bad but it definitely takes time. And the old composite boxes take some work too, I had to do some fiberglass work on my Challenger box. In the grand scheme of things I probably spent too much time on it, considering I don't really care if it's original. Time to dollars I likely would have been better off just buying a complete aftermarket system. Just a thought.