I've worked for many a-company that used PSDs for work & service trucks. One of the 1st companies I was with had many 7.3 IDIs that were basically used as tool trucks for iron workers. When the company finally got seroious about mechanics going out to fix broken machines( & boy, did it take a while

!), the big boss finally purchased a '00 F-550 with a Maintainer body. I was finally introduced to a PSD

. After, an '01 F-450 maint. body came, & then another '03 F-450. The basics of what I know about PSDs came from this company. One thing I've always remembered were all of these trucks having a single alternator. All of the other companies I've worked for that used PSDs, whether they were pick-ups, dually pick-ups, maint. body, service body, tow trucks, anything, ALL had single alts. Then, I join PowerStroke.org, & I've learned tonso stuff; including factory dual-alts exsist. Can anyone show me pics of what they look like?