Teekass, I'm a newb too but on the subject of long tube headers, see:
http://forums.hybridz.org/showthread.php?t=116345&highlight=s%26s+headers
I'm waiting for results. Don't know if your 2+2 makes a difference and aren't supposed to fit the 280, but a phonecall might be worth it. So far, this is my only hope to get long tube headers on my 260 with the JTR plates.
HTH
chris