What are the best shocks to use front and rear with doing a torsion key and axle flip??

Curious if anyone has found some that will match up pretty close..

If you know the needed length please post, I am going to have to do this on a weekend so I really don't have time to take out the shocks, measure for new shorter one's and try to get a hold of them. I'd like to get all my eggs in one basket before starting so to speak.