Matt there is a lot of stuff in the archives on this subject. I did mine and had no problems. Use a 14mm 6 sided socket on the bolt heads unless they are in brand new shape. I sprayed the bolts with PB Blaster on and off for a few days before I started. I also cranked the car during this time hoping to help work the penetrant in. Just enough to <span class="ev_code_RED">heat</span> the manifolds a little. If you break one, pray it breaks flush with the manifold. Take the rest loose and you'll still have a little to work with. If it breaks flush with the head, post a thread on head removal.
It may help to take one motor mount loose and jack up that side for extra access. Watch your fingers. Search the archives on topics such as this, there is an amazing treasure of info in there. Good luck, you'll love the Ram Air manifolds. If you have A/C, you'll want to get it out of the way.
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frittering and wasting the hours in an off hand way....
1969 GTO, 455ci, 230/236 Pontiac Dude's "Butcher Special" Comp hyd roller cam with Crower HIPPO solid roller lifters, Q-jet, Edelbrock P4B-QJ, Doug's headers, ported 6X-8 (97cc) heads, TKO600, 3.73 geared Eaton Tru-Trac 8.5", hydroboost, rear disc brakes......and my greatest mechanical feat....a new heater core.
