Parts store timing sets always work fine for me.

I ran a 180 degree thermostat in my truck to help with pinging problems. It was doing that because I had ripped off some of the emissions equipment. The 195 can help with emissions and fuel economy and helps the engine run correctly IF it's setup like the factory had it.

Run any type of oil you like, so long as you keep it changed. That's the important part, changing it on a regular basis.

The hard part with the timing cover is the oil pan. I can never get it off without dropping the oil pan down some. Some people say they do it, but it's never worked for me. Your kit should have two little pieces of gasket in it that are for the oil pan.

And carefully check your harmonic balancer where the front seal runs. If it has a groove in it, go back to the store and get a repair sleeve or "speedi sleeve" to fix it.