Renault 5 (1108 engine) 32mm zenith carb on Renaul

[Pedro]

Subject: renault 4 carb mod
Hello! I would like to put the r5 gtl carb on my 1989 r4 gtl because, after looking at both engines (same 1108), I don´t find any difference except for the carb to justify the difference in the horsepower (r5 49 hp/r4 34 hp).My question is if it will fit or it will also need the r5 manifold?By the way, is there anything I can do to improve hp without major mess? Thanks Pedro Lobo