Basicly the only reason I said the TBI and the 283 won't work so good is because of the availability of programs, injectors throttle bodies, sized for the 283, they simply do not make any. if you had the TBI unit running on the 350, the program and the throttle body/ injectors/ computer program are all sized for a 350, you will want to get at least the throttle body/ injectors for a 305, you may be able to have the computer reflashed to cope with 283 CI instead of 350 CI. don't get me wrong, could be a nice setup if it was tuned right but, it will take a lot of tuning because of the fact nobody supports TBI setup for a 283, and I have never heard of it being done. This setup isn't anything I would tackel myself because of the sheer tuning and cost of making it work.