perch adj. on a 1-ton 14 bolt into a 90\' k5? i just got a 14 bolt out of an 86 1 ton crew cab how much will i have to move the perches for it to fit under my 1990? what about shock mounts? will i have to buy billet spacers to make the rear end as wide as the front like i had on my 12 bolt? thanks for your reply's, j.c.