Thanks for the help, and I finally put them in! Took me a while as I was waiting for a few other bits to arrive to throw them in together.
I just did a little servicing to the engine, oil, coolant, filters, and also a TRD tailpipe that I found dirt cheap online for $60USD! Anyway, the car feels great, I can feel a definite change in response. My MPG's also seem to have improved, but don't quote me. The only thing that bothers me is that when I removed the old ones, is that there was oil in the hole for the plugs. The fluid emptied out into the head after I removed the plugs. I'm not 100% positive but it seems like the gaskets are done? If so, how bad can this get? I don't have extra gaskets laying around, and I need my daily driver, so I went ahead and installed the new ones... Car started, gray smoke came out the tailpipe for a few minutes, but nothing serious, I hope