Cyl Head info needed !!!

They came with both the small and large valves (340 or HP)
personally I liked to start off with the small valve head and do my own valve job with lots of meat to work with not some worn out seat
we've filled the bumper with lead or cement then told we were cheating- us- cheating??? took two bumpers and welded them together and filled the gap and put on longer brackets
will they let you put the battery in the trunk? a big heavy battery? if you do bolt it down strong- they can tear the bolts out of a floorpan- ask me how I know