It's hard to believe I started this thread back in January of 08 and it wasn't until yesterday that I finally got the engine running with the TBI system installed! Back then I had no idea what was involved in doing the conversion and needless to say I've learned a lot along the way
Based on the initial startup results I would have to say the change is going to be well worth it. Originally I was going to buy a kit from Affordable Fuel Injection but after reading reviews I opted to just source all the parts myself and hire someone that tunes GM TBI systems to handle the tuning aspect. At this point I think it was a good decision to go that route.
Going this route I spent roughly $1600 on everything needed to do the conversion and that includes the tuning assistance. I spent another $400 on various spare parts and tuning software, etc. Some of the things I bought I really didn't need to buy such as the tuning software but I like having the tools and supplies needed for just in case scenarios.
Here's some video of the TBI running for the first time on the test stand.
Bottom line is if I had to do it all over again I would take the same approach