Porsche RS2 intake manifold

[bill bleiler]

good morning list,
does anybody know approx how much HP you can expect
from this intake manifold alone.....approx numbers are
fine. I also have a clunk coming from the back when i
go over very small bumps in the road, it sounds like
it is coming from in front of the rear wheels, anybody
ever heard of this before? I put it up on the lift but
cant seem to look for play in something but cant seem
to find it. any ideas?
thanks 
bill

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