First drive

[KB93z28]

Took the Slowmaro out for the first drive of the season, right off the bat I noticed it seems to be misfiring in lower rpms. I cant really hear the misfires, but I can feel it pretty good, especially on the highway. It seems to chug along, I can feel it in the shifter when it misses. So im thinkin time for a new opti since I just did plugs, wires, and coil last season. Question is, whats the best opti for these things? factory? MSD? I also seemed to have developed an exhaust leak, Im guessing probably somewhere around where my buddy welded up my CME. I also originally though it was time to rebuild my tranny since after the turkey burns it was making a weird cluttering noise on decel mostly in 3rd and 2nd, but it seems to be more like a rattling...possibly tranny mounts????? Pizza was thinking time for cluster bearings from what I told him.....I cant really tell...