I ran against a guy that said he and his buddies car
had a junkyard motor in it...he won all the time
They were not allowed to put subframe connectors
or weld in a cage.. they welded some posts to the
floor, ran a low bar on the cage (subframe connector's) but
had a pipe slide over the welded in pipe and ran a bolt
thru it.. so it was all bolted in.. Smokey's rules bent just a little
but legal

He was pretty smart.. raced his buddies car
but had 18 muscle cars all Z/28's or big block F-bodies
Bob