i think i posted is only for the 73 up spool mount k frame and that's is if you are going to use the stock small block A-body k frame. my 73 big block car has the factory spool mount,s, I just got a set of the shumocker(spelling) engine conversion mounts. all i had to do is grind down the top of the drivers side motor mount and drill a new mounting hole. if you decide to keep your factory 72 small block K frame. I would take Greg up on his offer.
also i found these on the jegs website. looks like a nice engine mount.
http://www.jegs.com/i/Trans-Dapt/969/4698/10002/-1