Can someone give me the measurements of the firewall bolts on the brake booster for E-Body? Want to put Hydroboost on and trying get correct parts before I start. Does any one know if you have to remove the linkage under the dash? I got a HB unit from a '94 Astro van yesterday for $20. It looks like a big headache getting the power booster off. May not be worth the trouble. I want the extra room to get valve covers on and off easier. I have a 440 with M. P. valve covers
