11921 Slauson Ave.  Santa Fe Springs, CA.  90670  (800) 227-4116  FAX (888) 771-7713
20
STEP 1 - INSTALL EXTENSION PLATES - Continued 
1. Mark and drill holes into rear sill as shown in FIGS. 20-1 and 21-1.
REAR SILL - HOLE LOCATIONS FOR 96” WIDE VEHICLE
FIG. 20-1
BOLT EXTENSION PLATE TO VEHICLE
CAUTION
To preserve the corrosion resistance properties of the galvanized fi nish, 
MAXON recommends bolting the extension plate to vehicle.
NOTE: The extension plate has bolt holes so it can be bolted to vehicle body. Grade 
8 bolts are required. MAXON recommends getting the optional extension 
plate hardware kit listed in OPTIONS section.  Vehicle body must be drilled 
according to instructions. If necessary, extension plate may also be welded to 
vehicle body. Do the following bolting or welding instructions. 
USE 9/16” DRILL
(19 PLACES)
1-1/4”
3-1/8”
REAR 
SILL
1-1/2”
19”
24”
14”
34”
41”
48”
55”
62”
72”
77”
82”
94-1/2”
96”
6-1/2”
6-1/2”