Difference between 305 TBI and 350 TBI...

[jblaven]

Back a few years ago, we stripped out the threads where the fuel line attaches to the 350 TBI housing. We have a couple of family members who retired from GM and had extra parts laying around. They swapped the TBI for another one and it worked like a charm. That was 150,000 miles ago.

During the disassembly I just realized that it wasn't a 350 TBI but a 305. Note the picture:


I have read that the TBI body for a 305 and 350 are pretty much the same.
What I am unsure about is if the jets are the original to the 350 TBI or if they would be the same for a 305 (meaning it wouldn't matter). How would I check to see if these jets are the right ones for a 350? It has run just fine with them.

I was about to pull the trigger on a rebuild kit for a 350 TBI (specific to my '88 Suburban year model), but didn't know if the TBI I have would cause an issue.

Any thoughts?