i bought mine when they were on sale at summit. i paid like 508.00 to my door.
you do not habe to remove the rorsionbar, but i cannot see you getting them in without lifting the engine almost all the way out. i had to lift the engine out over 15 inches, then slide headers in, and bungee cord them up to the sides of the fenderwells, and as you drop the engine in, just keep eye on headers so they do not bind up dropping the engine down