Not too far off topic, but are there any risks to going to a vertical shock on the street? I still plan to drive the car on the street a fair amount, but I am not trying to carve canyons or anything.

I am currently running SS springs, but may make the switch to Caltracs if I can't get this thing to hook.

After crawling underneath and taking some measurments, I will not be able to move the upper mount outward very much (without re-working the exhaust, fuel lines, trunk floor where the fuel cell is sectioned in, etc.) So my next option looks to be to move the lower mount inward, away from the tire/spring. I understand that this is not ideal, but how big of an issue would this be?

I have the means to make some small brackets, weld them to the rear and make a new upper mount, but if I have to re-engineer everything aft of the axle, I may re-think my approach.

Any input is appreciated.