I believe i have a oil leak where the dizzy meets, the head, i have a few questions, is it hard to replace? where to buy the gasket? thanks

I actually just did mine a few weeks ago.
Take off your distributor cap and see if you have any signs of oil inside. If you do, you need to rebuild the whole thing. If you dont, then just get a new oring from toyota, and replace the old one.

what engine?

k will check that tommorow, but i think i have had this problem fo a while now, but never realized it, i did change my cap and rotot not to long ago and found no oil, but i will check again, but is the actually replacing of the o ring hard? or is it just a couple bolts

3SGTE

its easy. you just unbolt the distributor house from the head with 2 14mm bolts and slide the distributor out. then you'll see the o-ring that you have to replace.
you also have to get a timing light and set your timing again after removing the distributor.

Once you get the new o-ring, reuse your old one and do this...
http://mr2oc.com/showthread.php?t=275660&a...tributor+o-ring

Mine was still leaking after replacing the one ring thats already in there, and this helped fix the problem (along with fully rebuilding mine with a new internal seal (not easy) ).