I just did my hg and its a pain the first time. I think I could do it in about half the time now. You should follow the tsrm except for the torque spec on the head bolts. I just went with the arp head studs to be safe. The spec for them is 90ftlbs. And remember to clean out the threads in the block well before reassembling. This site will have all the info you need.
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/