hey all i have a hypothetical question. lets say one is about to buy a new engine from mazda for their s5 n/a rx-7. now wat should they choose if there sticking with there n/a setup. a turbo short block or an n/a short block? remember this is outta curiousity and wanting to learn more about uprgading and so forth. thanks for any who provide any input to this question.

 

Only get a turbo if you're getting a complete engine and undertaking a full turbo upgrade.
There are major intake differences. EG: 2 more intake ports.
You will want the NA short block.

 

Could you imagine how pokey a turbo block sans turbo would be?