Now you raised my curiosity I like my TBI but wanted to upgrade to TPI

what did you have leaking fuel rails or other problems the system seems pretty straight forward but I don't want a nightmare.
I am installing new injectors and reseal everything. So I am hoping it should be a simple bolt on and set up issue

However one issue that plagued me was the smell of fuel all the time (raw fuel smell) Noting: I ran the 3/8 return lines to the tank and to the bottom of the tank so it did not aerate the fuel in the tank
My buddies say unless you go to a fuel tank designed for EFI this is a problem. why what's the different i.e. my tank 87 El Camino original carburetor tank
I don't understand this since I used an external electric fuel pump drilled & tapped the fuel sender to accept a return line and kept the original vent(return line from the canister .

I have to figure this out. if you by chance had this experience , my passion is I like to do things correctly so if its not right I redo it !