Back springs only..thoughts?

[theduke]

Ok so obviously the wheel gap in the back of these cars is awful. Since I don't do anything half-assed I've put off suspension until I have the cash to do the WHOLE thing at once. May be awhile since being a professional musician is the only thing as expensive to maintain as a car hobby haha
Is there a temp solution that will at least make that gap tolerable without upsetting geometry / mismatched spring rates / needing a panhard bar etc...?
I've read up on those 55d springs and also heard of guys using just the rears from a set. Anyone have experience with either of these?
My original thoughts were to decide on springs for the long haul and just build suspension around that but seems like an incredible waste of time and money if I end up changing them later.