v-6 in early A-body

I remember when my 92 Dak had the oil pump drive bushing wear out my truck would barley run at all. After I replaced the bushing
you had to reset the distributor with an ohm meter.
My 92 had the big hole exhaust manifolds and was pretty loud, and the later years had the smaller manifold.
I guess that's why mine was rated at 180 hp and it went down to 175 after 93 I think.