looking good Allen, I am a bit partial to the 68's. I cant imagine how it runs with that stuffed on top. My 5.3 is fun.
like said above to to http://67-72chevytrucks.com/vboard/ I have the same user name there. There is a suspension page with tons of info. Mine continues to be a work in progress as I can afford a few mods. I have had it 20 odd years so you can do alot. My front suspension is now coil overs I build them and got them tuned in pretty good. I just redid my rear shocks to move them outboard and more vertical. They are adjustable on all 4 corners. the rear change was recent and have not driven it much as I am working the bugs out of the turbo setup. The sky is the limit (money is mine) on what you can do with them. Oh I do have disk brakes up front now and if you havn't that is a must.
Good luck.
Dave
Oh how bout more pictures.