Detroit Speed Control Arns + Speedtech AFX Tall Spindles

[NvrDun71]

Anybody running this combination on 67'-69' F-Body or 68'-72' Nova? If so any issues with alignment and or any other general fitment issues/negatives? My understanding is that the speedtech and DSE lower control arms offer no geometry change and are essentially a revamped stock lower control arm dimensionally. The uppers are a different story as both speedtech and DSE offer atleast +4 degrees built in castor amongst other changes. If I need to run the speedtech upper control arm I would switch, but I can't find any info saying there is any real difference between it and the DSE and therefore making a change unnecessary.

The car is a 71' Nova and right now I'm running DSE upper and lower control arms, DSE 2" Sbc drop springs, DSE Koni shocks n' sway bar, w/ stock spindle and Kore 3 brakes. Currently the car sits very low so I will need a spring change to offset some of the additional drop from the speedtech tall spindles as well, considering stepping up to the DSE big block springs as they are 1/8" taller overall and are 650 lb. vs the older 450lb springs I have now. Overall would really like to improve control arm angles and suspension geometry as a whole but still maintaining a low stance.

Any help/info is much appreciated.