Hi Every Body My Felly used to be a 1.3 SPI engine i made a transplant to be 1.6 MPI But I used the gearbox of the old engine it fits ok together but what i need to know are both engine come with the same gearbox i mean same ratios and all this stuff i need a help.

Different ratios yes. See this thread, in particular the post linked to http://briskoda.net/favorit-felicia-fun-forman/felicia-gear-ratios/108381/#post1278365

That is a very good info thank you man and let me ask for something else what about the clutch will it be affected with that much or not? what i men that the parts of the clutch will need to be changed faster or something?? and also i need to put a sport clutch is it available and if it is can any body tell me brands??

and thank you