The series 1 did not suffer the same problems because the EGR
tubes enter the upper plenum differently, that said, the series 1
do sometimes suffer coolant leaks from warping where the throttle
body bolts on.
Have a look at the upper intake. If it is aluminum intake than you will not
have an intake problem. I had a 1993 that have an aluminum intake, the only
problem I had is a small leak between intake and throttle assembly that is
easy to fix as another post already pointed out here.
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