so here is my 83 rx-7 i purchased

couldn't get it to start put a new battery then realized the starter was seized,after installing new starter i realized the fuel tank was rusted beyond repair. so i got a new fuel tank i suspect could fit. any information would be greatly appreciated as this is my first rx-7 rotary.
old tank
this is the old gas tank that was to rusted to be repaired
new tank current gas tank that i wanna know if i can modify to install instead

 

Hello and welcome.
Hope this link helps.
https://www.rx7club.com/1st-generati...tanks-1034465/

 

thanks for the help

 

Don't let the rotary scare you. Aft of the engine it's like any other 80's (carb'd) car. Check out the 1st Gen. Sticky at the top of this section. I believe you'll find a link for a downloadable Factory Service Manual that will come in handy.

 

One tank looks like it is used for a Carbed engine while the other is for a EFI engine(pump in the tank).

 

i checked them both and neither had a pump in tank

 

Ok..sorry about that then..they just look different.
Then again I am not an FB kind of Guy..!