if I owned that or a similar raised 4x4 truck,
one of the very first projects I would have ,built
(without a seconds hesitation)
(one of the endless reasons to own a decent mig welder)
mig
heres an option you might consider if moneys really tight
http://www.eastwood.com/mig-welders-175-amp-mig-welder-w-spool-gun.html
would have been a height and angle adjustable customized version of this ,
mechanics access support tool, from one of my spare engine cranes,
with a larger well padded platform to lay on comfortably that allowed you to lay over
, and have easy access into,
the raised trucks engine compartment,
one nice feature of having a decent mig welder is that with a few measurements and fabrication skills ,
and a few 10 ft sections of 1.5" angle iron and 1" square steel tube
and a metal saw, and some basic skills ,
mechanics could easily have a rather comfortable way,
to easily access a otherwise hard to get into engine bay on a tall truck,
a thick pad off a lounge deck chair on a 3/4" plywood platform securely bolted to the platform,
on the upper adjustable arm extending over the fenders would help,
you might also have added adjustable lighting to the under side of the boom in several locations,
and a small magnetic tool access tray,
think of it as a mechanics creeper thats solidly supported at a bit higher height than your truck fenders,
with infinitely adjustable angle for easy access,
with a ladder for easy support platform access , adjustable lighting,
Id also have the height as well as the angle adjustable,
a telescoping upper boom height is not that hard to fabricate
https://www.amazon.com/OxyLED-Dimma...coding=UTF8&psc=1&refRID=62AE1ZPA86JNEQEV5E6X