Generation III External Engine - Need Some Info On These Mounts

While doing some research I came across this pic and wondered if someone could provide some info them.

http://ls1tech.com/forums/15877342-post444.html

Thanks,

looks like a dyno cart mounts

Looks like either dyno mounts or swap mounts. The shorty headers lead me to believe they are some swap mounts.

look like vette mounts