Aftermarket brake Boosters

[Lippyp]

Who's using one of these? Are they easy to fit and will I need new brake lines to fit it? Its a 67 with drums all round. I have an ad for a used factory set up in the classifieds at the moment but am also considering a new aftermarket setup as at least that way I know its not gonna crap out on me in six months. My rightlegs ghetting tired and having recently driven a friends 68 Impala 427SS with drums all round but with a power booster I can't go back to my old stand up and pray manuals. Mind you, now the front shoes have been replaced and put in the same way on each side they might be a little better!