Drive it, but don't beat it. You'll be just fine. They make that 1" driveshaft spacer for a reason bro.
You ARE aware that the output shaft splines on the TKO are different than a stocker, right? You'll need to change the end of that driveshaft. I mention this because it seems keeping the car driveable is vital to you. That kinda stuff can screw you.
If you don't already have the part, D&D Performance has them in stock for $70.
http://www.ddperformance.com/ 248-735-6220 Call 'em up, ask for Paul. Tell him what you're up to, he'll fix you up with the right parts.
