yeh should b fair bhp gain tho best person to ask on first hand exp is craig i had them fitted to one of my micras n it made the bugger seem quicker off mark but removed them after a week n havent refitted to dif car yet
shouldnt b any knock on effect most of the parts with the 1.0 n 1.3 engine r very similar like i said craig would be best person to ask as hes been running on them 4 a while now
hi lol
in theory they should be pretty streight forward fittment haynes should give a description of how to remove and refit them, i would love to help but i have my own motor to sort at the mo cheers