4 VS 6 is really a tough arguement...

the perrin unit has the fittings relocated so as to NOT need the intake mani to be removed, loosened, etc....

the same is not said of the samco unit (but i have no proof that either are easier than the other, really....

per the perrin instructions, theirs takes 45 minutes to install (instead of the 4-5 hours per the other oem types)

per my experiences, 45 minutes ~ 4-5 hours anyway (versus 11-14 hours for the other...)lol....not funny....lol


ese