I scored a set of headers on ebay

[TOMMAY]

I won the bid for a set of new Hedman headers for 76 bucks plus 17 shipping the other day.1 3/4 primaries and 3 in. collectors which matches my exhaust,complete with gaskets,bolts,collectors.

I'll probably just go to the muffler shop and have them installed but I figure I better make sure all the manifold bolts are free so as to not risk a broken bolt.Near as I can tell,all but one are near frozen in the heads.Any tricks to freeing these rascals up?

I was also wondering if I should spring for those dead soft gaskets and locking header bolts,looks to me like they would cost almost as much as the headers.

My engine is an original big block with 781 heads.

Thanks

Tom