Some tech questions

[jsbihn]

Hey all
I have two issues with the "2"
Ok, first I am getting ready to drop the oil pan. So I wanted to know what things I should do and look for?
I wanted to know what gasket set would be the best for the rig (it has about 155000 miles on it), what filter would be the best, and anything else that should be done while in there. Would the corvette servo be good to do now?

Second, I have an issue at 1000-1500 rpm range. I am trying to figure if this is a tranny thing, or an engine thing...and how to fix it.
Basically around 1000-1500 rpms when the gas isnt pushed much, I can see the tach bounce. If I push the gas down, it tends to go away. Not sure if it stumbles when I do it. It just seems to go away. It isnt an all the time thing, but it seems to be more at low speeds, but does show sometimes at higher speeds. Basically it is a slight issue that I noticed and obviously I want to correct before it gets worse
I have no codes or anything.
I am getting ready to put new plugs and wires in it.
I have run seafoam through it a few times.

Any ideas?
Thanks