hey everyone i have a 87 cutlass im swaping a 03 5.3 ls into and needed help finding mounts and headers and such,anybody know any good places to find them?

 

You should probably join LS1tech.com and start asking your questions in the Conversions and Hybrids section.

Look for your body type in this sticky and PM people.
http://www.ls1tech.com/forums/conver...sion-here.html
Another thread.
http://www.ls1tech.com/forums/conver...1-cutlass.html

Here's an 80's Monte SS in which he fabricated everything.
http://www.ls7montess.com/

First use the search feature or Google with search terms like "85 Cutlass LS1" or whatever year.
Also search Car Domain for webpages showing swaps in those cars. I've seen a few in the past.

Street and Performance has a write up for a Grand National.
They utilize the G-body Monte Carlo headers which I have in my 2nd gen z28.
http://www.hotrodlane.cc/Buick%20Reg...ationalpg1.htm