[hdff]

Hi, first I'll say welcome to the forum. Yes the extended bed was an option back then aimed at people that wanted to put the big slide in campers on them. The Chevy version was called a Longhorn, I think the GMC version was called a Sierra Grande but don't hold me to that. As far as seats, I've seen lots of styles hacked into them... there will be lots of opinions forthcoming but I prefer a truck as close to original as possible so if the seat in it stock just recover it, aftermarket has originals . there should be a sticker on the inner glove box door called a "SPID" with the options that it came with. That's just my opinion, it's your truck so I'm sure when you get done it will look great..... There is a lot of information and good knowledgeable people here and no question is a dumb one. There are also lots of pics for examples, take your time , research decide what you want and then start heading that way.
Oh yeah, by the way everyone likes LOTS of pics so keep us updated on your progress......
here is a pic of my close to stock '71


Again welcome from TEXAS!!!