imo get a new one, without it there alot more engine noise, it's a deadener as well as also i heard that if you have one and the engine catches fire the plastic rivets melt and drape over the motor. there was a post about this a while back.
hoods without it are very ugly imo. since you have to look at the supports:2cents:
http://www.syty.net/forums/showthread.php?t=11415&highlight=Underhood+liner
um if you can't find a nice one at the bone yard, might try finding a new one through either GM or something. i don't have time to go searching for one, but if you do find a place that sells them report back here, since i need like 2 or 3 new ones anyways.
edit: hit up member hood, seems like he might be able to get ahold of them. although that thread is from 03
LMC sells 'em, according to their site and catalog anyways...... PN 38-7510, $39.95
yea looks like lmc is the only place besides jc whitney and i won't buy from them. guess theres our answer. can't believe i forgot about lmc, i suppose it can't be that bad
well i guess we'll have to hope that OEM ones new are still available. thats sucks that LMC can't even do an underhood liner right