Adam, You can use this adapter and any carbed intake you would like to run the throttle body on your current engine :
http://www.summitracing.com/parts/HLY-17-45/
I used an aftermarket harness from
www.fuelinjectionconnection.com for my truck. Robert was a good source for help, too. The harness is $245 shipped, and was a pretty easy install. There was enough length to it to install the ECM under the driver's seat, too. (after drilling a pass through hole in the firewall, behind the distributor). The FIC harness also deletes the smog equipment for a cleaner look (and less complexities as well). The main reason I went that was is the TBI harness I had looked like it had been in a catfight, and I didn't trust it at all. I will send ou a PM with my number if you have any questions.