Will a big block fit in a '67 or '68 Camaro that has factory air conditioning? Car was originaly a 327/powerglide "plane jane". If you have done it, are their any "pitfalls" to watch out for, or special mods that need to be made? The condensor box looks like it would be a real tight fit, if it even would fit, which is where I'm having my doubts. Thanks.