WORLD WIDE PREMIER 1996 CHEVY 3500H.D. 454 BIG BLOCK! @70%I need help w last 30%!

anybody out here have any ideas is there some kind of little box machine I can purchase the controls my computer in this truck so that I can even out this stupid idle!? I've checked for vacuum leaks obviously the exhaust lost a piece off the back so I'll be fixing that this week. I also need to get it painted. or I'm going to wrap it. the motor is absolutely full of snot it'll rub to 6,000 RPM in a second so definitely is a nice truck! the rocker panels are mint! the headliner is out of it the carpeting in the floors is garbage and dirty and junkied like no one ever cleaned it! but hopefully you guys will get to see what I can do with the vehicle and in a year's time with help from you guys my subscribers who I love and admire we can turn this into something and even if you guys only ever sent me a word of encouragement that's all I've ever asked for I've never begged anyone for cash or anything but I'll tell you this if you guys got any parts for this truck headlamps grills any of that stuff get at me and I'll buy it off you so that you can recover the money that you spent on it you can help me make this truck minty! please I'm 53 years old and this is the nicest vehicle I've ever had and the newest by the way! anyway God bless you all if you need to get at me it's not hard! everybody knows Mike Z