Anybody install Billstein Shocks on a 73 ? Did you need to do some "customizing"

[chargers_r_us]

I have ordered torsion bars from Firm Feel. I ordered the 1 1/8 bars , 43 1/2 long. I also ordered a set of Billsteins for the front, but the salesman just called and told me that I will need to make the opening in the LCA a bit larger to fit them in. I was just wondering if anybody else ran into this, and if it is best to go ahead with the Billsteins, or just go to KYB's. I was told that the KYB's do not fit snug either and would need some washers for spacers at the bottom. This is for a 1973 SE. Thanks again for any help on this one!