Yes,
BBK makes an H-pipe for LT's and so does JDM I believe.
Can I ask what your reasoning is for switching from the JBA's to the LT's? You do realize the LT's will cause a few more problems compared to the shortys... just my personal opinion here, but switching to LT's will cause you to look twice at that driveway before entering, or that bump in the road. They will scrape on stuff and will make any future clutch work a real PITA. On top of that you have the added cost,
Kooks are top shelf headers and they don't come cheap... all this for a minimal HP/TQ gain over your current headers. They do sound awesome though! I'm just not convinced they are worth the money or headaches.
U.M.