1991 Cheyenne 4.3l v6 intake manifold and a/c
 

All right so my 91 has a coolant leak that looks like it's coming from my intake manifold. Which aftermarket gasket is best for replacing the oem one? I don't want this problem reoccurring from chevys **** gasket.

Also, lucky me the 91 still has the r12 A/c system in it. Even more lucky is the fact that I'm pretty sure my compressor leaks. So, I'm curious to find out if a newer model Silverado like a 95 or 96 has a r134a compressor with the same mounting as my r12 compressor.