first time ever on track

my old man bought a 1970 340 4 speed swinger brand new in 1970 he literaly took it home swap a set of 456's in place of the 355's it came with, which with an 8 3/4 you can switch the third member out in less then an hour and go racing, but anyways he did this put a set off headmen headers on and ran 12.8 at 108 all day long with with 4000 rpm launches