New guy with lotta ??'s

[breezy]

I've just got a 71 SWB and am starting on making it my own.
Does anyone know of a driveshft for a 700r4 conversion besides cutting the one I have.
I also have collected all the TBI stuff for it except the harness. Has anyone used a harness from Haywire in Joplin Mo.
I'm not sure if I have all the info on this that I need so if you all could point me in the right direction I would be much appreciative (sp).
I also would like some shorty headers. Has anyone ran they chevelle headers and if so any part numbers and input would be great.
I also found a set for a jeep conversion that also list for a chevy truck. They are made by headman I belive. They look very good and I can get them for 180 from work. I work for the green mafia. Or O'reilly for those of you that don't knoe of the mafia.
That's enough for you all to chew on for now.
Thanks for any help. I've already got alot of money in this thing so I might as well finish her up.
So far , 383,4 wheel disc. old air, van tilt,new interior , new dash, lowered, 18" coys, and more. Trying to stay under 15,000 with this truck. Don't tell my wife but it's going to be close.
Here's a pic. Tell me what you all think.