11921 Slauson Ave.  Santa Fe Springs, CA.  90670  (800) 227-4116  FAX (888) 771-7713
15
STEP 1 - ATTACH EXTENSION PLATE TO VEHICLE
NOTE: GPTWR Liftgate extension plate comes with bolt holes so it can be 
bolted to vehicle body with optional bolt kit. GRADE 8 bolts are re-
quired. MAXON recommends getting the optional extension plate 
hardware kit listed in OPTIONS section. Vehicle body must be drilled 
according to instructions. Extension plate may also be welded to 
vehicle body. Do the following bolting or welding instructions for the 
extension plate.
CAUTION
To preserve the corrosion-resistant properties of the galvanized fi nish,
MAXON recommends bolting the galvanized extension plate to vehicle.
CAUTION
1. Mark and drill holes into rear sill as shown in FIGS. 15-1 and 16-1.
REAR SILL - HOLE LOCATIONS FOR 96” WIDE VEHICLE
FIG. 15-1
BOLT EXTENSION PLATE
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”