Your main concern on making the 1.1 spi turbo is fueling, me and a friend of mine were debating on why not going mpi on the 1.1. What most do is put a second injector.
About ur sleeper, well i let a honda driver try mine out and he was like.. OMG for a 1.1 fiat this thing pulls
. God wish i had that chip.. haha
But u have to change few things tho, it can stay sleeper look, but u will have to maybe lower it add bigger brakes work on the suspension, wich will make it better to handle and can improve performance and stopping.
Cant stay a sleeper forever m8, they will soon find out.. cuase ur intake will make alot more noise from the 38mm TB when u sink the throttle
.
Dont worry sleeper or not, they wont be expecting you to go fast, untill u pass them by.
Had a traffic light race few days ago against a 1.8 celica, he did win, but he waited at the next traffic light to ask me what i did with my engine cuase he didnt win by far.. maybe the guy was granny shifting haha.
I'm scanning around for an 1.4 16 v, they are rare. But it pushes about 100 hp, wich is same as a low boost 1.1 cinq, only with less torque. That will be future planning, but for now this 1.1 is too much fun