"90's? I had my mini truck in the late '80's. It was an blue '82 long bed, solid shell, lowered, w/15x8's, and an alright stereo. It was never a bass mobile, I actually listened to heavy metal and rock, not rap, and didn't want to have to wear earplugs like a buddy of mine did. He had a CRX, and all it was was amps and 12" subs, he drove around with earplugs. I think every thing that could rattle loose or crack did w/the that car.

If my nephew doesn't want it, do you think the stripes will hurt/help resale?

More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed