So I recently bought 2 donor cars and a crate engine for my 2001 monte carlo SS. One 2000 bonneville SSEI and a 2002 monte SS. Great deal, 400 for the bonneville and the bad transmission turned out to be just filter broken and 200 for a 2002 monte SS limited edition. I am considering doing a top swap onto one of the montes but am curious if I can put the top of an L36 onto an L67 bottom so in the end I end up with multiple functioning vehicles. Also got my wife a 2001 firebird with a 3.8 that had sat for 10 years, its working now after a bit of work but its eating gas at an extreme rate. No check engine lights and no fuel smells anywhere. Any ideas? Also does anyone have a link to a full top swap tutorial?